Vinod Koul [Wed, 6 Jan 2016 09:48:56 +0000 (15:18 +0530)]
Merge branch 'topic/stm32' into for-linus
Vinod Koul [Wed, 6 Jan 2016 09:48:44 +0000 (15:18 +0530)]
Merge branch 'topic/ste' into for-linus
Vinod Koul [Wed, 6 Jan 2016 09:48:36 +0000 (15:18 +0530)]
Merge branch 'topic/rcar' into for-linus
Vinod Koul [Wed, 6 Jan 2016 09:48:19 +0000 (15:18 +0530)]
Merge branch 'topic/omap' into for-linus
Vinod Koul [Wed, 6 Jan 2016 09:48:11 +0000 (15:18 +0530)]
Merge branch 'topic/ioatdma' into for-linus
Vinod Koul [Wed, 6 Jan 2016 09:48:05 +0000 (15:18 +0530)]
Merge branch 'topic/idma' into for-linus
Vinod Koul [Wed, 6 Jan 2016 09:47:47 +0000 (15:17 +0530)]
Merge branch 'topic/async' into for-linus
Vinod Koul [Wed, 6 Jan 2016 09:47:32 +0000 (15:17 +0530)]
Merge branch 'topic/univ_api' into for-linus
Vinod Koul [Wed, 6 Jan 2016 09:47:16 +0000 (15:17 +0530)]
Merge branch 'topic/desc_reuse' into for-linus
Peter Ujfalusi [Mon, 14 Dec 2015 20:47:42 +0000 (22:47 +0200)]
dmaengine: omap-dma: Add support for DMA filter mapping to slave devices
Add support for providing device to filter_fn mapping so client drivers
can switch to use the dma_request_chan() API.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Mon, 14 Dec 2015 20:47:41 +0000 (22:47 +0200)]
dmaengine: edma: Add support for DMA filter mapping to slave devices
Add support for providing device to filter_fn mapping so client drivers
can switch to use the dma_request_chan() API.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Mon, 14 Dec 2015 20:47:40 +0000 (22:47 +0200)]
dmaengine: core: Introduce new, universal API to request a channel
The two API function can cover most, if not all current APIs used to
request a channel. With minimal effort dmaengine drivers, platforms and
dmaengine user drivers can be converted to use the two function.
struct dma_chan *dma_request_chan_by_mask(const dma_cap_mask_t *mask);
To request any channel matching with the requested capabilities, can be
used to request channel for memcpy, memset, xor, etc where no hardware
synchronization is needed.
struct dma_chan *dma_request_chan(struct device *dev, const char *name);
To request a slave channel. The dma_request_chan() will try to find the
channel via DT, ACPI or in case if the kernel booted in non DT/ACPI mode
it will use a filter lookup table and retrieves the needed information from
the dma_slave_map provided by the DMA drivers.
This legacy mode needs changes in platform code, in dmaengine drivers and
finally the dmaengine user drivers can be converted:
For each dmaengine driver an array of DMA device, slave and the parameter
for the filter function needs to be added:
static const struct dma_slave_map da830_edma_map[] = {
{ "davinci-mcasp.0", "rx", EDMA_FILTER_PARAM(0, 0) },
{ "davinci-mcasp.0", "tx", EDMA_FILTER_PARAM(0, 1) },
{ "davinci-mcasp.1", "rx", EDMA_FILTER_PARAM(0, 2) },
{ "davinci-mcasp.1", "tx", EDMA_FILTER_PARAM(0, 3) },
{ "davinci-mcasp.2", "rx", EDMA_FILTER_PARAM(0, 4) },
{ "davinci-mcasp.2", "tx", EDMA_FILTER_PARAM(0, 5) },
{ "spi_davinci.0", "rx", EDMA_FILTER_PARAM(0, 14) },
{ "spi_davinci.0", "tx", EDMA_FILTER_PARAM(0, 15) },
{ "da830-mmc.0", "rx", EDMA_FILTER_PARAM(0, 16) },
{ "da830-mmc.0", "tx", EDMA_FILTER_PARAM(0, 17) },
{ "spi_davinci.1", "rx", EDMA_FILTER_PARAM(0, 18) },
{ "spi_davinci.1", "tx", EDMA_FILTER_PARAM(0, 19) },
};
This information is going to be needed by the dmaengine driver, so
modification to the platform_data is needed, and the driver map should be
added to the pdata of the DMA driver:
da8xx_edma0_pdata.slave_map = da830_edma_map;
da8xx_edma0_pdata.slavecnt = ARRAY_SIZE(da830_edma_map);
The DMA driver then needs to configure the needed device -> filter_fn
mapping before it registers with dma_async_device_register() :
ecc->dma_slave.filter_map.map = info->slave_map;
ecc->dma_slave.filter_map.mapcnt = info->slavecnt;
ecc->dma_slave.filter_map.fn = edma_filter_fn;
When neither DT or ACPI lookup is available the dma_request_chan() will
try to match the requester's device name with the filter_map's list of
device names, when a match found it will use the information from the
dma_slave_map to get the channel with the dma_get_channel() internal
function.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Mon, 14 Dec 2015 20:47:39 +0000 (22:47 +0200)]
dmaengine: core: Move and merge the code paths using private_candidate
Channel matching with private_candidate() is used in two paths, the error
checking is slightly different in them and they are duplicating code also.
Move the code under find_candidate() to provide consistent execution and
going to allow us to reuse this mode of channel lookup later.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Mon, 14 Dec 2015 20:47:38 +0000 (22:47 +0200)]
dmaengine: core: Skip mask matching when it is not provided to private_candidate
If mask is NULL skip the mask matching against the DMA device capabilities.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Damien.Horsley [Thu, 10 Dec 2015 15:07:23 +0000 (15:07 +0000)]
dmaengine: mdc: Correct terminate_all handling
Use of the CANCEL bit in mdc_terminate_all creates an
additional 'command done' to appear in the registers (in
addition to an interrupt).
In addition, there is a potential race between
mdc_terminate_all and the irq handler if a transfer
completes at the same time as the terminate all (presently
this results in an inappropriate warning).
To handle these issues, any outstanding 'command done'
events are cleared during mdc_terminate_all and the irq
handler takes no action when there are no new 'command done'
events.
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Wed, 16 Dec 2015 13:19:05 +0000 (15:19 +0200)]
dmaengine: edma: Add probe callback to edma_tptc_driver
Due to changes in device and platform code drivers w/o probe will fail to
load. This means that the devices for eDMA TPTCs are goign to be without
driver and omap hwmod code will turn them off after the kernel finished
loading:
[ 3.015900] platform
49800000.tptc: omap_device_late_idle: enabled but no driver. Idling
[ 3.024671] platform
49a00000.tptc: omap_device_late_idle: enabled but no driver. Idling
This will prevent eDMA to work since the TPTCs are not enabled.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Fixes: 34635b1accb9 ("dmaengine: edma: Add dummy driver skeleton for edma3-tptc")
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Mans Rullgard [Thu, 17 Dec 2015 23:30:57 +0000 (23:30 +0000)]
dmaengine: dw: fix potential memory leak in dw_dma_parse_dt()
If the "dma-channels" DT property is missing, the dw_dma_parse_dt()
function return NULL, but not before allocating memory for a struct
dw_dma_platform_data through devres. If the device supports parameter
detection, the probe still succeeds and the allocated memory is not
released until the device is removed.
Fix this by deferring the allocation until after checking the
"dma-channels" property.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
M'boumba Cedric Madianga [Mon, 7 Dec 2015 11:00:28 +0000 (12:00 +0100)]
dmaengine: stm32-dma: Fix unchecked deference of chan->desc
'commit
d8b468394fb7 ("dmaengine: Add STM32 DMA driver")' leads to the
following Smatch complaint:
drivers/dma/stm32-dma.c:562 stm32_dma_issue_pending()
error: we previously assumed 'chan->desc' could be null (see line 560)
So, this patch fixes the unchecked dereference of chan->desc by returning
operation not permitted error when stm32_dma_start_transfer() does not
succeed to allocate a virtual channel descriptor.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Geert Uytterhoeven [Fri, 4 Dec 2015 15:56:29 +0000 (16:56 +0100)]
dmaengine: sh: Remove unused R-Car HPB-DMAC driver
As of commit
4baadb9e05c68962 ("ARM: shmobile: r8a7778: remove obsolete
setup code"), the Renesas R-Car HPB-DMAC driver is no longer used.
In theory it could still be used on R-Car Gen1 SoCs, but that requires
adding DT support to the driver, which is not planned.
Remove the driver, it can be resurrected from git history when needed.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Simon Horman [Wed, 2 Dec 2015 05:53:54 +0000 (14:53 +0900)]
dmaengine: usb-dmac: Document SoC specific compatibility strings
In general Renesas hardware is not documented to the extent where the
relationship between IP blocks on different SoCs can be assumed although
they may appear to operate the same way. Furthermore the documentation
typically does not specify a version for individual IP blocks. For these
reasons a convention of using the SoC name in place of a version and
providing SoC-specific compatibility strings has been adopted.
Although not universally liked this convention is used in the bindings for
most drivers for Renesas hardware. The purpose of this patch is to
update the Renesas USB DMA Controller driver to follow this convention.
Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Markus Elfring [Mon, 16 Nov 2015 21:00:28 +0000 (22:00 +0100)]
ste_dma40: Delete an unnecessary variable initialisation in d40_probe()
The variable "res" will eventually be set to a resource pointer from
a call of the d40_hw_detect_init(() function.
Thus let us omit the explicit initialisation at the beginning.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Markus Elfring [Mon, 16 Nov 2015 20:56:07 +0000 (21:56 +0100)]
ste_dma40: Delete another unnecessary check in d40_probe()
A single jump label was used by the d40_probe() function in several cases
for error handling which was a bit inefficient here.
* This implementation detail could be improved by the introduction
of another jump label.
* Remove an extra check for the variable "base".
* Omit its explicit initialisation at the beginning then.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Markus Elfring [Mon, 16 Nov 2015 19:26:27 +0000 (20:26 +0100)]
ste_dma40: Delete an unnecessary check before the function call "kmem_cache_destroy"
The kmem_cache_destroy() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Lars-Peter Clausen [Sat, 21 Nov 2015 11:09:48 +0000 (12:09 +0100)]
dmaengine: img-mdc: Remove unnecessary synchronize_irq() before devm_free_irq()
Calling synchronize_irq() right before devm_free_irq() is quite useless. On
one hand the IRQ can easily fire again before devm_free_irq() is entered,
on the other hand devm_free_irq() itself calls synchronize_irq() internally
(in a race condition free way), before any state associated with the IRQ is
freed.
Patch was generated using the following semantic patch:
// <smpl>
@@
expression irq, dev;
@@
-synchronize_irq(irq);
devm_free_irq(dev, irq, ...);
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Lars-Peter Clausen [Sat, 21 Nov 2015 11:09:47 +0000 (12:09 +0100)]
dmaengine: at_xdmac: Remove unnecessary synchronize_irq() before free_irq()
Calling synchronize_irq() right before free_irq() is quite useless. On one
hand the IRQ can easily fire again before free_irq() is entered, on the
other hand free_irq() itself calls synchronize_irq() internally (in a race
condition free way), before any state associated with the IRQ is freed.
Patch was generated using the following semantic patch:
// <smpl>
@@
expression irq;
@@
-synchronize_irq(irq);
free_irq(irq, ...);
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Yuan Yao [Fri, 30 Oct 2015 11:03:58 +0000 (19:03 +0800)]
dmaengine: fsl-edma: add PM suspend/resume support
This add power management suspend/resume support for the fsl-edma
driver.
eDMA acted as a basic function used by others. What it needs to do
is the two steps below to support power management.
In fsl_edma_suspend_late:
Check whether the DMA chan is idle, if it is not idle disable DMA
request.
In fsl_edma_resume_early:
Enable the eDMA and wait for being used.
Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Andy Shevchenko [Tue, 17 Nov 2015 16:00:30 +0000 (18:00 +0200)]
dmaengine: hsu: speed up residue calculation
There is no need to calculate an overall length of the descriptor each time we
call for DMA transfer status. Instead we do this at descriptor allocation stage
and keep the stored length for further usage.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Andy Shevchenko [Tue, 17 Nov 2015 11:34:26 +0000 (13:34 +0200)]
dmaengine: acpi-dma: check for 64-bit MMIO address
Currently the match DMA controller is done only for lower 32 bits of
address which might be not true on 64-bit platform. Check upper portion
as well.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Andy Shevchenko [Tue, 17 Nov 2015 11:37:10 +0000 (13:37 +0200)]
dmaengine: idma64: use local variable to index descriptor
Since a local variable contains the number of hardware desriptors at the
beginning of idma64_desc_fill() we may use it to index the last descriptor as
well.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Andy Shevchenko [Tue, 17 Nov 2015 11:37:09 +0000 (13:37 +0200)]
dmaengine: idma64: convert idma64_hw_desc_fill() to return void
Explicitly show in idma64_desc_fill() how we link the hardware
descriptors.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Andy Shevchenko [Tue, 17 Nov 2015 11:37:08 +0000 (13:37 +0200)]
dmaengine: idma64: set maximum allowed segment size for DMA
This tells, for example, IOMMU what the maximum size of a segment
the DMA controller can send.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Andy Shevchenko [Tue, 17 Nov 2015 11:37:07 +0000 (13:37 +0200)]
dmaengine: idma64: drop IRQ enable / disable in handler
There is no need to disable interrupts in the IRQ handler. The driver
guarantess that at one time only one descriptor is active, besides the fact
that each call to the same channel will be serialized in idma64_chan_irq()
handler anyway.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Ludovic Desroches [Mon, 23 Nov 2015 13:09:39 +0000 (14:09 +0100)]
dmaengine: at_xdmac: fix spurious flag status for mem2mem transfers
When setting the channel configuration register, the perid field is not
set to 0 since it is useless for mem2mem transfers. Unfortunately, a
device has 0 as perid. It could cause spurious flags status because
the controller could mix some events from the two channels.
For that reason, use the highest perid value for mem2mem transfers since it
doesn't match the perid of other devices.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Lars-Peter Clausen [Mon, 23 Nov 2015 10:06:43 +0000 (11:06 +0100)]
dmaengine: Add might_sleep() to dmaengine_synchronize()
Implementations of dmaengine_synchronize() are allowed to sleep, hence the
function must not be called to from atomic context. Add might_sleep() to
dmaengine_synchronize() to make it easier to detect non-compliant callers.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Yoshihiro Shimoda [Thu, 12 Nov 2015 04:37:40 +0000 (13:37 +0900)]
dmaengine: usb-dmac: fix endless loop in usb_dmac_chan_terminate_all()
This patch fixes an issue that list_for_each_entry() in
usb_dmac_chan_terminate_all() is possible to cause endless loop because
this will move own desc to the desc_freed. So, this driver should use
list_for_each_entry_safe() instead of list_for_each_entry().
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Wed, 11 Nov 2015 10:37:58 +0000 (12:37 +0200)]
dmaengine: omap-dma: Handle cases when the channel is polled for completion
When a DMA client driver decides that it is not providing callback for
completion of a transfer (and/or does not set the DMA_PREP_INTERRUPT) but
it will poll the status of the transfer (in case of short memcpy for
example) we will not get interrupt for the completion of the transfer and
will not mark the transaction as done.
Check the channel enable bit in the CCR when the status is queried and if
the channel is no longer active, we call the omap_dma_callback() to handle
the transfer completion.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Wed, 11 Nov 2015 10:37:57 +0000 (12:37 +0200)]
dmaengine: omap-dma: Remove tasklet to start the transfers
The use of tasklet to actually start the DMA transfer slightly decreases the
DMA throughput since it adds small scheduling delay when the transfer is
started. In normal use, even with high I/O load the tasklet would start
one transaction at a time, however running the DMAtest for memcpy on all
available channels will cause the tasklet to start about 15 transfers.
The performance numbers on OMAP4 PandaBoard-es (test_buf_size = 6553):
With the tasklet:
dmatest: dma0chan30-copy: summary 5000 tests, 0 failures 186 iops 593 KB/s (0)
dmatest: dma0chan8-copy0: summary 5000 tests, 0 failures 184 iops 584 KB/s (0)
dmatest: dma0chan13-copy: summary 5000 tests, 0 failures 184 iops 585 KB/s (0)
dmatest: dma0chan12-copy: summary 5000 tests, 0 failures 184 iops 585 KB/s (0)
dmatest: dma0chan7-copy0: summary 5000 tests, 0 failures 183 iops 581 KB/s (0)
With this patch (no tasklet):
dmatest: dma0chan4-copy0: summary 5000 tests, 0 failures 199 iops 644 KB/s (0)
dmatest: dma0chan5-copy0: summary 5000 tests, 0 failures 199 iops 645 KB/s (0)
dmatest: dma0chan6-copy0: summary 5000 tests, 0 failures 199 iops 637 KB/s (0)
dmatest: dma0chan24-copy: summary 5000 tests, 0 failures 199 iops 638 KB/s (0)
dmatest: dma0chan16-copy: summary 5000 tests, 0 failures 199 iops 638 KB/s (0)
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Wed, 11 Nov 2015 10:37:56 +0000 (12:37 +0200)]
dmaengine: omap-dma: Clean up the prep_slave_sg sg list walk code
The for_each_sg() macro's last parameter is inteded to be used as counter.
We can use 'i' instead of 'j' within the loop for indexes.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Peter Ujfalusi [Wed, 11 Nov 2015 10:37:55 +0000 (12:37 +0200)]
dmaengine: omap-dma: Correct status reporting for memcpy
During mem copy both src and dst position moves at the same pace. Check the
dst position for progress reporting.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Julia Lawall [Fri, 13 Nov 2015 11:46:00 +0000 (12:46 +0100)]
dmaengine: ioatdma: constify dca_ops structures
The dca_ops structure is never modified, so declare it as const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Dave Jiang [Fri, 6 Nov 2015 20:24:01 +0000 (13:24 -0700)]
dmaengine: IOATDMA: Cleanup pre v3.0 chansts register reads
Remove pre-3.0 channel status reads. 3.0 and later chansts register
is 64bit and can be read 64bit. This was clarified with the hardware
architects and since the driver now only support 3.0+ we don't need the
legacy support
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
M'boumba Cedric Madianga [Fri, 16 Oct 2015 13:59:16 +0000 (15:59 +0200)]
ARM: configs: Add STM32 DMA support in STM32 defconfig
This patch adds STM32 DMA support in stm32_defconfig file
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
M'boumba Cedric Madianga [Fri, 16 Oct 2015 13:59:14 +0000 (15:59 +0200)]
dmaengine: Add STM32 DMA driver
This patch adds support for the STM32 DMA controller.
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
M'boumba Cedric Madianga [Fri, 16 Oct 2015 13:59:13 +0000 (15:59 +0200)]
dt-bindings: Document the STM32 DMA bindings
This patch adds documentation of device tree bindings for the STM32 dma
controller.
Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Robert Jarzmik [Tue, 13 Oct 2015 19:54:30 +0000 (21:54 +0200)]
dmaengine: pxa_dma: declare transfer are reusable
As this driver provides a mechanism to reuse transfers, declare it in
its probe function.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Robert Jarzmik [Tue, 13 Oct 2015 19:54:29 +0000 (21:54 +0200)]
dmaengine: enable DMA_CTRL_REUSE
In the current state, the capability of transfer reuse can neither be
set by a slave dmaengine driver, nor used by a client driver, because
the capability is not available to dma_get_slave_caps().
Fix this by adding a way to declare the capability.
Fixes: 272420214d26 ("dmaengine: Add DMA_CTRL_REUSE")
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Robert Jarzmik [Tue, 13 Oct 2015 19:54:28 +0000 (21:54 +0200)]
dmaengine: virt-dma: don't always free descriptor upon completion
This patch attempts to enhance the case of a transfer submitted multiple
times, and where the cost of creating the descriptors chain is not
negligible.
This happens with big video buffers (several megabytes, ie. several
thousands of linked descriptors in one scatter-gather list). In these
cases, a video driver would want to do :
- tx = dmaengine_prep_slave_sg()
- dma_engine_submit(tx);
- dma_async_issue_pending()
- wait for video completion
- read video data (or not, skipping a frame is also possible)
- dma_engine_submit(tx)
=> here, the descriptors chain recalculation will take time
=> the dma coherent allocation over and over might create holes in
the dma pool, which is counter-productive.
- dma_async_issue_pending()
- etc ...
In order to cope with this case, virt-dma is modified to prevent freeing
the descriptors upon completion if DMA_CTRL_REUSE flag is set in the
transfer.
This patch is a respin of the former DMA_CTRL_ACK approach, which was
reverted due to a regression in audio drivers.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Lars-Peter Clausen [Tue, 20 Oct 2015 09:46:31 +0000 (11:46 +0200)]
ALSA: pcm_dmaengine: Properly synchronize DMA on shutdown
Use the new dmaengine_synchronize() function to make sure that all complete
callbacks have finished running before the runtime data, which is accessed
in the completed callback, is freed.
This fixes a long standing use-after-free race condition that has been
observed on some systems.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Lars-Peter Clausen [Tue, 20 Oct 2015 09:46:30 +0000 (11:46 +0200)]
dmaengine: axi_dmac: Add synchronization support
Implement the new device_synchronize() callback to allow proper
synchronization when stopping a channel. Since the driver already makes
sure that no new complete callbacks are scheduled after the
device_terminate_all() callback has been called, all left to do in the
device_synchronize() callback is to wait for all currently running complete
callbacks to finish.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Lars-Peter Clausen [Tue, 20 Oct 2015 09:46:29 +0000 (11:46 +0200)]
dmaengine: virt-dma: Add synchronization helper function
Add a synchronize helper function for the virt-dma library. The function
makes sure that any scheduled descriptor complete callbacks have finished
running before the function returns.
This needs to be called by drivers using virt-dma in their
device_synchronize() callback. Depending on the driver additional
operations might be necessary in addition to calling vchan_synchronize() to
ensure proper synchronization.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Lars-Peter Clausen [Tue, 20 Oct 2015 09:46:28 +0000 (11:46 +0200)]
dmaengine: Add transfer termination synchronization support
The DMAengine API has a long standing race condition that is inherent to
the API itself. Calling dmaengine_terminate_all() is supposed to stop and
abort any pending or active transfers that have previously been submitted.
Unfortunately it is possible that this operation races against a currently
running (or with some drivers also scheduled) completion callback.
Since the API allows dmaengine_terminate_all() to be called from atomic
context as well as from within a completion callback it is not possible to
synchronize to the execution of the completion callback from within
dmaengine_terminate_all() itself.
This means that a user of the DMAengine API does not know when it is safe
to free resources used in the completion callback, which can result in a
use-after-free race condition.
This patch addresses the issue by introducing an explicit synchronization
primitive to the DMAengine API called dmaengine_synchronize().
The existing dmaengine_terminate_all() is deprecated in favor of
dmaengine_terminate_sync() and dmaengine_terminate_async(). The former
aborts all pending and active transfers and synchronizes to the current
context, meaning it will wait until all running completion callbacks have
finished. This means it is only possible to call this function from
non-atomic context. The later function does not synchronize, but can still
be used in atomic context or from within a complete callback. It has to be
followed up by dmaengine_synchronize() before a client can free the
resources used in a completion callback.
In addition to this the semantics of the device_terminate_all() callback
are slightly relaxed by this patch. It is now OK for a driver to only
schedule the termination of the active transfer, but does not necessarily
have to wait until the DMA controller has completely stopped. The driver
must ensure though that the controller has stopped and no longer accesses
any memory when the device_synchronize() callback returns.
This was in part done since most drivers do not pay attention to this
anyway at the moment and to emphasize that this needs to be done when the
device_synchronize() callback is implemented. But it also helps with
implementing support for devices where stopping the controller can require
operations that may sleep.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Linus Torvalds [Mon, 16 Nov 2015 01:00:27 +0000 (17:00 -0800)]
Linux 4.4-rc1
Linus Torvalds [Sun, 15 Nov 2015 17:36:24 +0000 (09:36 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf updates from Thomas Gleixner:
"Mostly updates to the perf tool plus two fixes to the kernel core code:
- Handle tracepoint filters correctly for inherited events (Peter
Zijlstra)
- Prevent a deadlock in perf_lock_task_context (Paul McKenney)
- Add missing newlines to some pr_err() calls (Arnaldo Carvalho de
Melo)
- Print full source file paths when using 'perf annotate --print-line
--full-paths' (Michael Petlan)
- Fix 'perf probe -d' when just one out of uprobes and kprobes is
enabled (Wang Nan)
- Add compiler.h to list.h to fix 'make perf-tar-src-pkg' generated
tarballs, i.e. out of tree building (Arnaldo Carvalho de Melo)
- Add the llvm-src-base.c and llvm-src-kbuild.c files, generated by
the 'perf test' LLVM entries, when running it in-tree, to
.gitignore (Yunlong Song)
- libbpf error reporting improvements, using a strerror interface to
more precisely tell the user about problems with the provided
scriptlet, be it in C or as a ready made object file (Wang Nan)
- Do not be case sensitive when searching for matching 'perf test'
entries (Arnaldo Carvalho de Melo)
- Inform the user about objdump failures in 'perf annotate' (Andi
Kleen)
- Improve the LLVM 'perf test' entry, introduce a new ones for BPF
and kbuild tests to check the environment used by clang to compile
.c scriptlets (Wang Nan)"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
perf/x86/intel/rapl: Remove the unused RAPL_EVENT_DESC() macro
tools include: Add compiler.h to list.h
perf probe: Verify parameters in two functions
perf session: Add missing newlines to some pr_err() calls
perf annotate: Support full source file paths for srcline fix
perf test: Add llvm-src-base.c and llvm-src-kbuild.c to .gitignore
perf: Fix inherited events vs. tracepoint filters
perf: Disable IRQs across RCU RS CS that acquires scheduler lock
perf test: Do not be case sensitive when searching for matching tests
perf test: Add 'perf test BPF'
perf test: Enhance the LLVM tests: add kbuild test
perf test: Enhance the LLVM test: update basic BPF test program
perf bpf: Improve BPF related error messages
perf tools: Make fetch_kernel_version() publicly available
bpf tools: Add new API bpf_object__get_kversion()
bpf tools: Improve libbpf error reporting
perf probe: Cleanup find_perf_probe_point_from_map to reduce redundancy
perf annotate: Inform the user about objdump failures in --stdio
perf stat: Make stat options global
perf sched latency: Fix thread pid reuse issue
...
Linus Torvalds [Sun, 15 Nov 2015 17:35:33 +0000 (09:35 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single fix to prevent math underflow in the numa balancing code"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/numa: Fix math underflow in task_tick_numa()
Linus Torvalds [Sun, 15 Nov 2015 17:34:32 +0000 (09:34 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull liblockdep fixes from Thomas Gleixner:
"Three small patches to synchronize liblockdep with the latest core
changes"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/liblockdep: explicitly declare lockdep API we call from liblockdep
tools/liblockdep: add userspace versions of WRITE_ONCE and RCU_INIT_POINTER
tools/liblockdep: remove task argument from debug_check_no_locks_held
Linus Torvalds [Sun, 15 Nov 2015 17:32:59 +0000 (09:32 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A couple of fixes and updates related to x86:
- Fix the W+X check regression on XEN
- The real fix for the low identity map trainwreck
- Probe legacy PIC early instead of unconditionally allocating legacy
irqs
- Add cpu verification to long mode entry
- Adjust the cache topology to AMD Fam17H systems
- Let Merrifield use the TSC across S3"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Call verify_cpu() after having entered long mode too
x86/setup: Fix low identity map for >= 2GB kernel range
x86/mm: Skip the hypervisor range when walking PGD
x86/AMD: Fix last level cache topology for AMD Fam17h systems
x86/irq: Probe for PIC presence before allocating descs for legacy IRQs
x86/cpu/intel: Enable X86_FEATURE_NONSTOP_TSC_S3 for Merrifield
Linus Torvalds [Sun, 15 Nov 2015 17:30:48 +0000 (09:30 -0800)]
Merge branches 'irq-urgent-for-linus' and 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irq and timer fixes from Thomas Gleixner:
- An irq regression fix to restore the wakeup behaviour of chained
interrupts.
- A timer fix for a long standing race versus timers scheduled on a
target cpu which got exposed by recent changes in the workqueue
implementation.
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/PM: Restore system wake up from chained interrupts
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timers: Use proper base migration in add_timer_on()
Linus Torvalds [Sun, 15 Nov 2015 17:10:53 +0000 (09:10 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
"These are the highlists of the main MIPS pull request for 4.4:
- Add latencytop support
- Support appended DTBs
- VDSO support and initially use it for gettimeofday.
- Drop the .MIPS.abiflags and ELF NOTE sections from vmlinux
- Support for the 5KE, an internal test core.
- Switch all MIPS platfroms to libata drivers.
- Improved support, cleanups for ralink and Lantiq platforms.
- Support for the new xilfpga platform.
- A number of DTB improvments for BMIPS.
- Improved support for CM and CPS.
- Minor JZ4740 and BCM47xx enhancements"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (120 commits)
MIPS: idle: add case for CPU_5KE
MIPS: Octeon: Support APPENDED_DTB
MIPS: vmlinux: create a section for appended DTB
MIPS: Clean up compat_siginfo_t
MIPS: Fix PAGE_MASK definition
MIPS: BMIPS: Enable GZIP ramdisk and timed printks
MIPS: Add xilfpga defconfig
MIPS: xilfpga: Add mipsfpga platform code
MIPS: xilfpga: Add xilfpga device tree files.
dt-bindings: MIPS: Document xilfpga bindings and boot style
MIPS: Make MIPS_CMDLINE_DTB default
MIPS: Make the kernel arguments from dtb available
MIPS: Use USE_OF as the guard for appended dtb
MIPS: BCM63XX: Use pr_* instead of printk
MIPS: Loongson: Cleanup CONFIG_LOONGSON_SUSPEND.
MIPS: lantiq: Disable xbar fpi burst mode
MIPS: lantiq: Force the crossbar to big endian
MIPS: lantiq: Initialize the USB core on boot
MIPS: lantiq: Return correct value for fpi clock on ar9
MIPS: ralink: Add missing clock on rt305x
...
Linus Torvalds [Sat, 14 Nov 2015 17:43:00 +0000 (09:43 -0800)]
Merge tag 'sound-fix-4.4-rc1' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are a collection of small fixes tha have been gathered for
4.4-rc1. The only significant changes are those in PCI drivers
Kconfig, to use "depends on" instead of "select" for CONFIG_ZONE_DMA.
A reverse select is often more user-friendly, but in this case, it
makes hard to manage with the conflict with ZONE_DEVICE, so changed in
such a way for now.
Others are all small fixes and quirks: an error check in soundcore
reigster_chrdev(), HD-audio HDMI/DP phantom jack fix, Intel Broxton DP
quirk, USB-audio DSD device quirk, some constifications, etc"
* tag 'sound-fix-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: pci: depend on ZONE_DMA
ALSA: hda - Simplify phantom jack handling for HDMI/DP
ALSA: hda/hdmi - apply Skylake fix-ups to Broxton display codec
ALSA: ctxfi: constify rsc ops structures
ALSA: usb: Add native DSD support for Aune X1S
ALSA: oxfw: add an comment to Kconfig for TASCAM FireOne
sound: fix check for error condition of register_chrdev()
Linus Torvalds [Sat, 14 Nov 2015 17:09:37 +0000 (09:09 -0800)]
Merge tag 'arc-4.4-rc1-part2' of git://git./linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
"Found a couple of brown paper bag bugs with the prev pull request
(including a SMP build breakage report from Guenter). Since these are
urgent I also decided to send over a bunch of other pending fixes
which could have otherwise waited an rc or two.
Summary:
- A bunch of brown paper bag bugs (MAINTAINERS list email, SMP build
failure)
- cpu_relax() now compiler barrier for UP as well
- handling of userspace Bus Errors for ARCompact builds"
* tag 'arc-4.4-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: Fix silly typo in MAINTAINERS file
ARC: cpu_relax() to be compiler barrier even for UP
ARC: use ASL assembler mnemonic
ARC: [arcompact] Handle bus error from userspace as Interrupt not exception
ARC: remove extraneous header include
ARCv2: lib: memcpy: use local symbols
Vineet Gupta [Sat, 14 Nov 2015 07:28:53 +0000 (12:58 +0530)]
ARC: Fix silly typo in MAINTAINERS file
Vineet Gupta [Mon, 9 Nov 2015 12:18:34 +0000 (17:48 +0530)]
ARC: cpu_relax() to be compiler barrier even for UP
cpu_relax() on ARC has been barrier only for SMP (and no-op for UP). Per
recent discussions, it is safer to make it a compiler barrier
unconditionally.
Link: http://lkml.kernel.org/r/53A7D3AA.9020100@synopsys.com
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Vineet Gupta [Thu, 5 Nov 2015 03:43:31 +0000 (09:13 +0530)]
ARC: use ASL assembler mnemonic
ARCompact and ARCv2 only have ASL, while binutils used to support LSL as
a alias mnemonic.
Newer binutils (upstream) don't want to do that so replace it.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Vineet Gupta [Fri, 30 Oct 2015 19:52:51 +0000 (01:22 +0530)]
ARC: [arcompact] Handle bus error from userspace as Interrupt not exception
Bus errors from userspace on ARCompact based cores are handled by core
as a high priority L2 interrupt but current code treated it as interrupt
Handling an interrupt like exception is certainly not going to go unnoticed.
(and it worked so far as we never saw a Bus error from userspace until
IPPK guys tested a DDR controller with ECC error detection etc hence
needed to explicitly trigger/handle such errors)
- So move mem_service exception handler from common code into ARCv2 code.
- In ARCompact code, define mem_service as L2 interrupt handler which
just drops down to pure kernel mode and goes of to enqueue SIGBUS
Reported-by: Nelson Pereira <npereira@synopsys.com>
Tested-by: Ana Martins <amartins@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Vineet Gupta [Fri, 30 Oct 2015 19:17:39 +0000 (00:47 +0530)]
ARC: remove extraneous header include
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Linus Torvalds [Sat, 14 Nov 2015 05:53:18 +0000 (21:53 -0800)]
Merge tag 'chrome-platform-4.4' of git://git./linux/kernel/git/olof/chrome-platform
Pull chrome platform updates from Olof Johansson:
"Here's the branch of chrome platform changes for v4.4. Some have been
queued up for the full 4.3 release cycle since I forgot to send them
in for that round (rebased early on to deal with fixes conflicts).
Most of these enable EC communication stuff -- Pixel 2015 support,
enabling building for ARM64 platforms, and a few fixes for memory
leaks.
There's also a patch in here to allow reading/writing the verified
boot context, which depends on a sysfs patch acked by Greg"
* tag 'chrome-platform-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform:
platform/chrome: Fix i2c-designware adapter name
platform/chrome: Support reading/writing the vboot context
sysfs: Support is_visible() on binary attributes
platform/chrome: cros_ec: Fix possible leak in led_rgb_store()
platform/chrome: cros_ec: Fix leak in sequence_store()
platform/chrome: Enable Chrome platforms on 64-bit ARM
platform/chrome: cros_ec_dev - Add a platform device ID table
platform/chrome: cros_ec_lpc - Add support for Google Pixel 2
platform/chrome: cros_ec_lpc - Use existing function to check EC result
platform/chrome: Make depends on MFD_CROS_EC instead CROS_EC_PROTO
Revert "platform/chrome: Don't make CHROME_PLATFORMS depends on X86 || ARM"
Linus Torvalds [Sat, 14 Nov 2015 05:47:06 +0000 (21:47 -0800)]
Merge tag 'platform-drivers-x86-v4.4-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull another x86 platform driver update from Darren Hart:
"Support for the unfortunately rather unique ESC key on the Ideapad
Yoga 3 and two DMI matches for rfkill support. Solitary fix for
potential missed errors for asus-wmi. Downgrade a thinkpad_acpi
message to info.
asus-wmi:
- fix error handling in store_sys_wmi()
ideapad-laptop:
- Add Lenovo Yoga 900 to no_hw_rfkill dmi list
- include Yoga 3 1170 in add rfkill whitelist
- add support for Yoga 3 ESC key
thinkpad_acpi:
- Don't yell on unsupported brightness interfaces"
* tag 'platform-drivers-x86-v4.4-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
asus-wmi: fix error handling in store_sys_wmi()
ideapad-laptop: Add Lenovo Yoga 900 to no_hw_rfkill dmi list
ideapad-laptop: include Yoga 3 1170 in add rfkill whitelist
ideapad-laptop: add support for Yoga 3 ESC key
thinkpad_acpi: Don't yell on unsupported brightness interfaces
Linus Torvalds [Sat, 14 Nov 2015 05:41:14 +0000 (21:41 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull more input updates from Dmitry Torokhov:
"An update to the tsc2005 driver that allows it to also support tsc2004
(basically the same controller, but uses i2c instead of spi bus), and
a couple of bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: parkbd - drop bogus __init from parkbd_allocate_serio()
Input: elantech - add Fujitsu Lifebook U745 to force crc_enabled
Input: tsc2004 - add support for tsc2004
Input: tsc200x-core - rename functions and variables
Input: tsc2005 - separate SPI and core functions
Linus Torvalds [Sat, 14 Nov 2015 04:35:54 +0000 (20:35 -0800)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi
Pull final round of SCSI updates from James Bottomley:
"Sorry for the delay in this patch which was mostly caused by getting
the merger of the mpt2/mpt3sas driver, which was seen as an essential
item of maintenance work to do before the drivers diverge too much.
Unfortunately, this caused a compile failure (detected by linux-next),
which then had to be fixed up and incubated.
In addition to the mpt2/3sas rework, there are updates from pm80xx,
lpfc, bnx2fc, hpsa, ipr, aacraid, megaraid_sas, storvsc and ufs plus
an assortment of changes including some year 2038 issues, a fix for a
remove before detach issue in some drivers and a couple of other minor
issues"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (141 commits)
mpt3sas: fix inline markers on non inline function declarations
sd: Clear PS bit before Mode Select.
ibmvscsi: set max_lun to 32
ibmvscsi: display default value for max_id, max_lun and max_channel.
mptfusion: don't allow negative bytes in kbuf_alloc_2_sgl()
scsi: pmcraid: replace struct timeval with ktime_get_real_seconds()
mvumi: 64bit value for seconds_since1970
be2iscsi: Fix bogus WARN_ON length check
scsi_scan: don't dump trace when scsi_prep_async_scan() is called twice
mpt3sas: Bump mpt3sas driver version to 09.102.00.00
mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs
mpt2sas, mpt3sas: Update the driver versions
mpt3sas: setpci reset kernel oops fix
mpt3sas: Added OEM Gen2 PnP ID branding names
mpt3sas: Refcount fw_events and fix unsafe list usage
mpt3sas: Refcount sas_device objects and fix unsafe list usage
mpt3sas: sysfs attribute to report Backup Rail Monitor Status
mpt3sas: Ported WarpDrive product SSS6200 support
mpt3sas: fix for driver fails EEH, recovery from injected pci bus error
mpt3sas: Manage MSI-X vectors according to HBA device type
...
Linus Torvalds [Sat, 14 Nov 2015 04:04:17 +0000 (20:04 -0800)]
Merge branch 'for-next' of git://git./linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger:
"This series contains HCH's changes to absorb configfs attribute
->show() + ->store() function pointer usage from it's original
tree-wide consumers, into common configfs code.
It includes usb-gadget, target w/ drivers, netconsole and ocfs2
changes to realize the improved simplicity, that now renders the
original include/target/configfs_macros.h CPP magic for fabric drivers
and others, unnecessary and obsolete.
And with common code in place, new configfs attributes can be added
easier than ever before.
Note, there are further improvements in-flight from other folks for
v4.5 code in configfs land, plus number of target fixes for post -rc1
code"
In the meantime, a new user of the now-removed old configfs API came in
through the char/misc tree in commit
7bd1d4093c2f ("stm class: Introduce
an abstraction for System Trace Module devices").
This merge resolution comes from Alexander Shishkin, who updated his stm
class tracing abstraction to account for the removal of the old
show_attribute and store_attribute methods in commit
517982229f78
("configfs: remove old API") from this pull. As Alexander says about
that patch:
"There's no need to keep an extra wrapper structure per item and the
awkward show_attribute/store_attribute item ops are no longer needed.
This patch converts policy code to the new api, all the while making
the code quite a bit smaller and easier on the eyes.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>"
That patch was folded into the merge so that the tree should be fully
bisectable.
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (23 commits)
configfs: remove old API
ocfs2/cluster: use per-attribute show and store methods
ocfs2/cluster: move locking into attribute store methods
netconsole: use per-attribute show and store methods
target: use per-attribute show and store methods
spear13xx_pcie_gadget: use per-attribute show and store methods
dlm: use per-attribute show and store methods
usb-gadget/f_serial: use per-attribute show and store methods
usb-gadget/f_phonet: use per-attribute show and store methods
usb-gadget/f_obex: use per-attribute show and store methods
usb-gadget/f_uac2: use per-attribute show and store methods
usb-gadget/f_uac1: use per-attribute show and store methods
usb-gadget/f_mass_storage: use per-attribute show and store methods
usb-gadget/f_sourcesink: use per-attribute show and store methods
usb-gadget/f_printer: use per-attribute show and store methods
usb-gadget/f_midi: use per-attribute show and store methods
usb-gadget/f_loopback: use per-attribute show and store methods
usb-gadget/ether: use per-attribute show and store methods
usb-gadget/f_acm: use per-attribute show and store methods
usb-gadget/f_hid: use per-attribute show and store methods
...
Linus Torvalds [Sat, 14 Nov 2015 02:02:30 +0000 (18:02 -0800)]
Merge branch 'for-linus-3' of git://git./linux/kernel/git/viro/vfs
Pull vfs xattr cleanups from Al Viro.
* 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
f2fs: xattr simplifications
squashfs: xattr simplifications
9p: xattr simplifications
xattr handlers: Pass handler to operations instead of flags
jffs2: Add missing capability check for listing trusted xattrs
hfsplus: Remove unused xattr handler list operations
ubifs: Remove unused security xattr handler
vfs: Fix the posix_acl_xattr_list return value
vfs: Check attribute names in posix acl xattr handers
Linus Torvalds [Sat, 14 Nov 2015 01:35:48 +0000 (17:35 -0800)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
- three fixes tagged for -stable including a crash fix, simple
performance tweak, and an invalid i/o error.
- build regression fix for the nvdimm unit tests
- nvdimm documentation update
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax: fix __dax_pmd_fault crash
libnvdimm: documentation clarifications
libnvdimm, pmem: fix size trim in pmem_direct_access()
libnvdimm, e820: fix numa node for e820-type-12 pmem ranges
tools/testing/nvdimm, acpica: fix flag rename build breakage
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:54 +0000 (19:18 +0200)]
f2fs: xattr simplifications
Now that the xattr handler is passed to the xattr handler operations, we
have access to the attribute name prefix, so simplify
f2fs_xattr_generic_list.
Also, f2fs_xattr_advise_list is only ever called for
f2fs_xattr_advise_handler; there is no need to double check for that.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Changman Lee <cm224.lee@samsung.com>
Cc: Chao Yu <chao2.yu@samsung.com>
Cc: linux-f2fs-devel@lists.sourceforge.net
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:53 +0000 (19:18 +0200)]
squashfs: xattr simplifications
Now that the xattr handler is passed to the xattr handler operations, we
have access to the attribute name prefix, so simplify the squashfs xattr
handlers a bit.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:52 +0000 (19:18 +0200)]
9p: xattr simplifications
Now that the xattr handler is passed to the xattr handler operations, we
can use the same get and set operations for the user, trusted, and security
xattr namespaces. In those namespaces, we can access the full attribute
name by "reattaching" the name prefix the vfs has skipped for us. Add a
xattr_full_name helper to make this obvious in the code.
For the "system.posix_acl_access" and "system.posix_acl_default"
attributes, handler->prefix is the full attribute name; the suffix is the
empty string.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Cc: v9fs-developer@lists.sourceforge.net
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:51 +0000 (19:18 +0200)]
xattr handlers: Pass handler to operations instead of flags
The xattr_handler operations are currently all passed a file system
specific flags value which the operations can use to disambiguate between
different handlers; some file systems use that to distinguish the xattr
namespace, for example. In some oprations, it would be useful to also have
access to the handler prefix. To allow that, pass a pointer to the handler
to operations instead of the flags value alone.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:50 +0000 (19:18 +0200)]
jffs2: Add missing capability check for listing trusted xattrs
The vfs checks if a task has the appropriate access for get and set
operations, but it cannot do that for the list operation; the file system
must check for that itself.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:49 +0000 (19:18 +0200)]
hfsplus: Remove unused xattr handler list operations
The list operations can never be called; they are even documented to be
unused.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Andreas Gruenbacher [Sun, 4 Oct 2015 17:18:48 +0000 (19:18 +0200)]
ubifs: Remove unused security xattr handler
Ubifs installs a security xattr handler in sb->s_xattr but doesn't use the
generic_{get,set,list,remove}xattr inode operations needed for processing
this list of attribute handlers; the handler is never called. Instead,
ubifs uses its own xattr handlers which also process security xattrs.
Remove the dead code.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: linux-mtd@lists.infradead.org
Cc: Subodh Nijsure <snijsure@grid-net.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Andreas Gruenbacher [Tue, 3 Nov 2015 14:25:08 +0000 (15:25 +0100)]
vfs: Fix the posix_acl_xattr_list return value
When a filesystem that contains POSIX ACLs is mounted without ACL support
(-o noacl), the appropriate behavior is not to list any existing POSIX ACL
xattrs. The return value for list xattr handlers in this case is 0, not an
error code: several filesystems that use the POSIX ACL xattr handlers do
not expect the list operation to fail.
Symlinks cannot have ACLs, so posix_acl_xattr_list will never be called for
symlinks in the first place.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Andreas Gruenbacher [Tue, 3 Nov 2015 14:25:07 +0000 (15:25 +0100)]
vfs: Check attribute names in posix acl xattr handers
The get and set operations of the POSIX ACL xattr handlers failed to check
the attribute names, so all names with "system.posix_acl_access" or
"system.posix_acl_default" as a prefix were accepted. Reject invalid names
from now on.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Sat, 14 Nov 2015 01:05:32 +0000 (17:05 -0800)]
Merge tag 'vfio-v4.4-rc1' of git://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Use kernel interfaces for VPD emulation (Alex Williamson)
- Platform fix for releasing IRQs (Eric Auger)
- Type1 IOMMU always advertises PAGE_SIZE support when smaller mapping
sizes are available (Eric Auger)
- Platform fixes for incorrectly using copies of structures rather than
pointers to structures (James Morse)
- Rework platform reset modules, fix leak, and add AMD xgbe reset
module (Eric Auger)
- Fix vfio_device_get_from_name() return value (Joerg Roedel)
- No-IOMMU interface (Alex Williamson)
- Fix potential out of bounds array access in PCI config handling (Dan
Carpenter)
* tag 'vfio-v4.4-rc1' of git://github.com/awilliam/linux-vfio:
vfio/pci: make an array larger
vfio: Include No-IOMMU mode
vfio: Fix bug in vfio_device_get_from_name()
VFIO: platform: reset: AMD xgbe reset module
vfio: platform: reset: calxedaxgmac: fix ioaddr leak
vfio: platform: add dev_info on device reset
vfio: platform: use list of registered reset function
vfio: platform: add compat in vfio_platform_device
vfio: platform: reset: calxedaxgmac: add reset function registration
vfio: platform: introduce module_vfio_reset_handler macro
vfio: platform: add capability to register a reset function
vfio: platform: introduce vfio-platform-base module
vfio/platform: store mapped memory in region, instead of an on-stack copy
vfio/type1: handle case where IOMMU does not support PAGE_SIZE size
VFIO: platform: clear IRQ_NOAUTOEN when de-assigning the IRQ
vfio/pci: Use kernel VPD access functions
vfio: Whitelist PCI bridges
Linus Torvalds [Sat, 14 Nov 2015 00:40:36 +0000 (16:40 -0800)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Pull SMB3 updates from Steve French:
"A collection of SMB3 patches adding some reliability features
(persistent and resilient handles) and improving SMB3 copy offload.
I will have some additional patches for SMB3 encryption and SMB3.1.1
signing (important security features), and also for improving SMB3
persistent handle reconnection (setting ChannelSequence number e.g.)
that I am still working on but wanted to get this set in since they
can stand alone"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
Allow copy offload (CopyChunk) across shares
Add resilienthandles mount parm
[SMB3] Send durable handle v2 contexts when use of persistent handles required
[SMB3] Display persistenthandles in /proc/mounts for SMB3 shares if enabled
[SMB3] Enable checking for continuous availability and persistent handle support
[SMB3] Add parsing for new mount option controlling persistent handles
Allow duplicate extents in SMB3 not just SMB3.1.1
Linus Torvalds [Sat, 14 Nov 2015 00:30:29 +0000 (16:30 -0800)]
Merge branch 'for-linus-4.4' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes and cleanups from Chris Mason:
"Some of this got cherry-picked from a github repo this week, but I
verified the patches.
We have three small scrub cleanups and a collection of fixes"
* 'for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: Use fs_info directly in btrfs_delete_unused_bgs
btrfs: Fix lost-data-profile caused by balance bg
btrfs: Fix lost-data-profile caused by auto removing bg
btrfs: Remove len argument from scrub_find_csum
btrfs: Reduce unnecessary arguments in scrub_recheck_block
btrfs: Use scrub_checksum_data and scrub_checksum_tree_block for scrub_recheck_block_checksum
btrfs: Reset sblock->xxx_error stats before calling scrub_recheck_block_checksum
btrfs: scrub: setup all fields for sblock_to_check
btrfs: scrub: set error stats when tree block spanning stripes
Btrfs: fix race when listing an inode's xattrs
Btrfs: fix race leading to BUG_ON when running delalloc for nodatacow
Btrfs: fix race leading to incorrect item deletion when dropping extents
Btrfs: fix sleeping inside atomic context in qgroup rescan worker
Btrfs: fix race waiting for qgroup rescan worker
btrfs: qgroup: exit the rescan worker during umount
Btrfs: fix extent accounting for partial direct IO writes
Dmitry Torokhov [Fri, 13 Nov 2015 19:56:45 +0000 (11:56 -0800)]
Merge branch 'next' into for-linus
Prepare second round of input updates for 4.3 merge window.
Linus Torvalds [Fri, 13 Nov 2015 17:24:40 +0000 (09:24 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
Pull Ceph updates from Sage Weil:
"There are several patches from Ilya fixing RBD allocation lifecycle
issues, a series adding a nocephx_sign_messages option (and associated
bug fixes/cleanups), several patches from Zheng improving the
(directory) fsync behavior, a big improvement in IO for direct-io
requests when striping is enabled from Caifeng, and several other
small fixes and cleanups"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
libceph: clear msg->con in ceph_msg_release() only
libceph: add nocephx_sign_messages option
libceph: stop duplicating client fields in messenger
libceph: drop authorizer check from cephx msg signing routines
libceph: msg signing callouts don't need con argument
libceph: evaluate osd_req_op_data() arguments only once
ceph: make fsync() wait unsafe requests that created/modified inode
ceph: add request to i_unsafe_dirops when getting unsafe reply
libceph: introduce ceph_x_authorizer_cleanup()
ceph: don't invalidate page cache when inode is no longer used
rbd: remove duplicate calls to rbd_dev_mapping_clear()
rbd: set device_type::release instead of device::release
rbd: don't free rbd_dev outside of the release callback
rbd: return -ENOMEM instead of pool id if rbd_dev_create() fails
libceph: use local variable cursor instead of &msg->cursor
libceph: remove con argument in handle_reply()
ceph: combine as many iovec as possile into one OSD request
ceph: fix message length computation
ceph: fix a comment typo
rbd: drop null test before destroy functions
Linus Torvalds [Fri, 13 Nov 2015 17:19:05 +0000 (09:19 -0800)]
Merge tag '4.4-additional' of git://git.lwn.net/linux
Pull more documentation updates from Jon Corbet:
"A few more documentation patches that wandered in and have no reason
to wait; these include some improvements to the suggestions for email
clients and patch submission"
* tag '4.4-additional' of git://git.lwn.net/linux:
Documentation: Add minimal Mutt config for using Gmail
Documentation: Add note on sending files directly with Mutt
Documentation: dontdiff: remove media from dontdiff
Documentation/SubmittingPatches: discuss In-Reply-To
Remove email address from Documentation/filesystems/overlayfs.txt
can-doc: Add missing semicolon to example
Linus Torvalds [Fri, 13 Nov 2015 17:12:38 +0000 (09:12 -0800)]
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm sti driver updates from Dave Airlie:
"The sti driver had a requirement on some patches in Greg's tree, they
are in, so I see no problems just merging this one now"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux:
drm/sti: load HQVDP firmware the first time HQVDP's plane is used
drm/sti: fix typo issue in sti_mode_config_init
drm/sti: set mixer background color through module param
drm/sti: Remove local fbdev emulation Kconfig option
drm/sti: remove redundant sign extensions
drm/sti: hdmi use of_get_i2c_adapter_by_node interface
drm/sti: hdmi fix i2c adapter device refcounting
drm/sti: Do not export symbols
drm/sti: Build monolithic driver
drm/sti: Use drm_crtc_vblank_*() API
drm/sti: Store correct CRTC index in events
drm/sti: Select FW_LOADER
drm/sti: Constify function pointer structs
Stephen Rothwell [Fri, 13 Nov 2015 01:35:36 +0000 (12:35 +1100)]
mpt3sas: fix inline markers on non inline function declarations
After merging the scsi tree, today's linux-next build (powerpc
allyesconfig) failed like this:
In file included from drivers/scsi/mpt3sas/mpt3sas_scsih.c:59:0:
drivers/scsi/mpt3sas/mpt3sas_scsih.c: In function '_scsih_io_done':
drivers/scsi/mpt3sas/mpt3sas_base.h:1414:1: error: inlining failed in call to always_inline 'mpt3sas_scsi_direct_io_get': function body not available
mpt3sas_scsi_direct_io_get(struct MPT3SAS_ADAPTER *ioc, u16 smid);
^
drivers/scsi/mpt3sas/mpt3sas_scsih.c:4448:6: error: called from here
if (mpt3sas_scsi_direct_io_get(ioc, smid) &&
^
In file included from drivers/scsi/mpt3sas/mpt3sas_scsih.c:59:0:
drivers/scsi/mpt3sas/mpt3sas_base.h:1416:1: error: inlining failed in call to always_inline 'mpt3sas_scsi_direct_io_set': function body not available
mpt3sas_scsi_direct_io_set(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 direct_io);
^
drivers/scsi/mpt3sas/mpt3sas_scsih.c:4454:3: error: called from here
mpt3sas_scsi_direct_io_set(ioc, smid, 0);
^
In file included from drivers/scsi/mpt3sas/mpt3sas_scsih.c:5
9:0:
drivers/scsi/mpt3sas/mpt3sas_base.h:1416:1: error: inlining failed in call to always_inline 'mpt3sas_scsi_direct_io_set': function body not available
mpt3sas_scsi_direct_io_set(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 direct_io);
^
drivers/scsi/mpt3sas/mpt3sas_scsih.c:4454:3: error: called from here
mpt3sas_scsi_direct_io_set(ioc, smid, 0);
^
Presumably caused by commit
c84b06a48c4d ("mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Dan Williams [Fri, 13 Nov 2015 02:33:54 +0000 (18:33 -0800)]
dax: fix __dax_pmd_fault crash
Since 4.3 introduced devm_memremap_pages() the pfns handled by DAX may
optionally have a struct page backing. When a mapped pfn reaches
vmf_insert_pfn_pmd() it fails with a crash signature like the following:
kernel BUG at mm/huge_memory.c:905!
[..]
Call Trace:
[<
ffffffff812a73ba>] __dax_pmd_fault+0x2ea/0x5b0
[<
ffffffffa01a4182>] xfs_filemap_pmd_fault+0x92/0x150 [xfs]
[<
ffffffff811fbe02>] handle_mm_fault+0x312/0x1b50
Fix this by falling back to 4K mappings in the pfn_valid() case. Longer
term, vmf_insert_pfn_pmd() needs to grow support for architectures that
can provide a 'pmd_special' capability.
Cc: <stable@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Linus Torvalds [Fri, 13 Nov 2015 02:24:47 +0000 (18:24 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"One urgent fix for an oops under console lock in some drivers, one
uapi fix, and one revert to fix rockchip regression"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
Revert "drm/rockchip: Convert the probe function to the generic drm_of_component_probe()"
drm: Don't oops in drm_calc_timestamping_constants() if drm_vblank_init() wasn't called
drm: Use userspace compatible type in fourcc_mod_code macro
Linus Torvalds [Fri, 13 Nov 2015 00:22:54 +0000 (16:22 -0800)]
Merge tag 'trace-v4.4-2' of git://git./linux/kernel/git/rostedt/linux-trace
Pull trace cleanups from Steven Rostedt:
"This contains three more clean up patches.
One patch is needed to make tracing work without debugfs now that
tracing uses its own tracefs.
The second is removing an unused variable.
The third is fixing a warning about unused variables when MAX_TRACER
is not configured. Note, this warning shows up in gcc 6.0, but does
not show up in gcc 4.9, as it seems that gcc does not complain about
constants not being used"
* tag 'trace-v4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: #ifdef out uses of max trace when CONFIG_TRACER_MAX_TRACE is not set
tracing: Remove unused ftrace_cpu_disabled per cpu variable
tracing: Make tracing work when debugfs is not configured in
Dave Airlie [Fri, 13 Nov 2015 00:08:19 +0000 (10:08 +1000)]
Merge branch 'drm-sti-next-2015-11-03' of git.linaro.org/people/benjamin.gaignard/kernel into drm-next
sti/drm changes
Add better support for firmware loading
lots of fixes.
* 'drm-sti-next-2015-11-03' of http://git.linaro.org/people/benjamin.gaignard/kernel:
drm/sti: load HQVDP firmware the first time HQVDP's plane is used
drm/sti: fix typo issue in sti_mode_config_init
drm/sti: set mixer background color through module param
drm/sti: Remove local fbdev emulation Kconfig option
drm/sti: remove redundant sign extensions
drm/sti: hdmi use of_get_i2c_adapter_by_node interface
drm/sti: hdmi fix i2c adapter device refcounting
drm/sti: Do not export symbols
drm/sti: Build monolithic driver
drm/sti: Use drm_crtc_vblank_*() API
drm/sti: Store correct CRTC index in events
drm/sti: Select FW_LOADER
drm/sti: Constify function pointer structs
Mark Yao [Tue, 10 Nov 2015 08:47:19 +0000 (16:47 +0800)]
Revert "drm/rockchip: Convert the probe function to the generic drm_of_component_probe()"
This reverts commit
52f5eb60940de889ce98a876f6933b574ead3225.
Rockchip drm can't work with generic drm_of_component_probe now
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Ville Syrjälä [Thu, 12 Nov 2015 12:34:18 +0000 (14:34 +0200)]
drm: Don't oops in drm_calc_timestamping_constants() if drm_vblank_init() wasn't called
Seems the crtc helpers call drm_calc_timestamping_constants()
unconditionally even if the driver didn't initialize vblank support by
calling drm_vblank_init(). That used to be OK since the constants were
stored under drm_crtc.
However I broke this with
commit
eba1f35dfe14 ("drm: Move timestamping constants into drm_vblank_crtc")
when I moved the constants to live inside the drm_vblank_crtc struct
instead. If drm_vblank_init() isn't called, we don't allocate these
structures, and so drm_calc_timestamping_constants() will oops.
Fix it by adding a check into drm_calc_timestamping_constants() to see
if vblank support was initialized at all. And to keep in line with other
such checks, also toss in a check and warn for the case where vblank
support was initialized, but the wrong number of crtcs was specified.
Fixes the following sort of oops:
BUG: unable to handle kernel NULL pointer dereference at
00000000000000b0
IP: [<
ffffffffa014b266>] drm_calc_timestamping_constants+0x86/0x130 [drm]
PGD 0
Oops: 0002 [#1] SMP
Modules linked in: sr_mod cdrom mgag200(+) i2c_algo_bit drm_kms_helper ahci syscopyarea sysfillrect sysimgblt libahci fb_sys_fops bnx2x ttm tg3(+) mdio drm ptp sd_mod libata i2c_core pps_core libcrc32c hpsa dm_mirror dm_region_hash dm_log dm_mod
CPU: 0 PID: 418 Comm: kworker/0:2 Not tainted 4.3.0+ #1
Hardware name: HP ProLiant DL380 Gen9, BIOS P89 06/09/2015
Workqueue: events work_for_cpu_fn
task:
ffff88046ca95500 ti:
ffff88007830c000 task.ti:
ffff88007830c000
RIP: 0010:[<
ffffffffa014b266>] [<
ffffffffa014b266>] drm_calc_timestamping_constants+0x86/0x130 [drm]
RSP: 0018:
ffff88007830f4e8 EFLAGS:
00010246
RAX:
0000000000fe4c00 RBX:
ffff88006a849160 RCX:
0000000000000540
RDX:
0000000000000000 RSI:
000000000000fde8 RDI:
ffff88006a849000
RBP:
ffff88007830f518 R08:
ffff88007830c000 R09:
00000001b87e3712
R10:
00000000000050c4 R11:
0000000000000000 R12:
0000000000fe4c00
R13:
ffff88006a849000 R14:
0000000000000000 R15:
000000000000fde8
FS:
0000000000000000(0000) GS:
ffff88046f800000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
00000000000000b0 CR3:
00000000019d6000 CR4:
00000000001406f0
Stack:
ffff88007830f518 ffff88006a849000 ffff880c69b90340 ffff880c69b90000
ffff880c69b90348 ffff880c69b90340 ffff88007830f748 ffffffffa042f7e7
ffff88006a849090 0000000000000000 ffff88006a849160 0000000000000000
Call Trace:
[<
ffffffffa042f7e7>] drm_crtc_helper_set_mode+0x3d7/0x4b0 [drm_kms_helper]
[<
ffffffffa04307d4>] drm_crtc_helper_set_config+0x8d4/0xb10 [drm_kms_helper]
[<
ffffffffa01548d4>] drm_mode_set_config_internal+0x64/0x100 [drm]
[<
ffffffffa043c342>] drm_fb_helper_pan_display+0xa2/0x280 [drm_kms_helper]
[<
ffffffff81392c7b>] fb_pan_display+0xbb/0x170
[<
ffffffff8138cf70>] bit_update_start+0x20/0x50
[<
ffffffff8138b81b>] fbcon_switch+0x39b/0x590
[<
ffffffff8140a3d0>] redraw_screen+0x1a0/0x240
[<
ffffffff8140b30e>] do_bind_con_driver+0x2ee/0x310
[<
ffffffff8140b651>] do_take_over_console+0x141/0x1b0
[<
ffffffff81387377>] do_fbcon_takeover+0x57/0xb0
[<
ffffffff8138c98b>] fbcon_event_notify+0x60b/0x750
[<
ffffffff810a5599>] notifier_call_chain+0x49/0x70
[<
ffffffff810a58dd>] __blocking_notifier_call_chain+0x4d/0x70
[<
ffffffff810a5916>] blocking_notifier_call_chain+0x16/0x20
[<
ffffffff8139282b>] fb_notifier_call_chain+0x1b/0x20
[<
ffffffff81394881>] register_framebuffer+0x1f1/0x330
[<
ffffffffa043d9aa>] drm_fb_helper_initial_config+0x27a/0x3d0 [drm_kms_helper]
[<
ffffffffa0469b4d>] mgag200_fbdev_init+0xdd/0xf0 [mgag200]
[<
ffffffffa0468586>] mgag200_modeset_init+0x176/0x1e0 [mgag200]
[<
ffffffffa0464659>] mgag200_driver_load+0x3f9/0x580 [mgag200]
[<
ffffffffa014e067>] drm_dev_register+0xa7/0xb0 [drm]
[<
ffffffffa015054f>] drm_get_pci_dev+0x8f/0x1e0 [drm]
[<
ffffffffa046937b>] mga_pci_probe+0x9b/0xc0 [mgag200]
[<
ffffffff813662d5>] local_pci_probe+0x45/0xa0
[<
ffffffff8109afe4>] work_for_cpu_fn+0x14/0x20
[<
ffffffff8109e13c>] process_one_work+0x14c/0x3c0
[<
ffffffff8109eaa4>] worker_thread+0x244/0x470
[<
ffffffff8168bfba>] ? __schedule+0x2aa/0x760
[<
ffffffff8109e860>] ? rescuer_thread+0x310/0x310
[<
ffffffff810a4438>] kthread+0xd8/0xf0
[<
ffffffff810a4360>] ? kthread_park+0x60/0x60
[<
ffffffff8169030f>] ret_from_fork+0x3f/0x70
[<
ffffffff810a4360>] ? kthread_park+0x60/0x60
Code: f6 31 d2 41 89 c2 8b 83 b4 00 00 00 0f af c1 48 98 48 69 c0 40 42 0f 00 48 f7 f6 f6 43 74 10 41 89 c4 75 26 f6 05 9a 6f 03 00 01 <45> 89 96 b0 00 00 00 45 89 a6 ac 00 00 00 75 35 48 83 c4 08 5b
RIP [<
ffffffffa014b266>] drm_calc_timestamping_constants+0x86/0x130 [drm]
RSP <
ffff88007830f4e8>
CR2:
00000000000000b0
Cc: Jeff Moyer <jmoyer@redhat.com>
Reported-by: Jeff Moyer <jmoyer@redhat.com>
References: http://lists.freedesktop.org/archives/dri-devel/2015-November/094217.html
Fixes: eba1f35dfe14 ("drm: Move timestamping constants into drm_vblank_crtc")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Thu, 12 Nov 2015 23:54:31 +0000 (09:54 +1000)]
Merge tag 'topic/drm-fixes-2015-11-11' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Single fix for uapi.
* tag 'topic/drm-fixes-2015-11-11' of git://anongit.freedesktop.org/drm-intel:
drm: Use userspace compatible type in fourcc_mod_code macro
Linus Torvalds [Thu, 12 Nov 2015 23:54:30 +0000 (15:54 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull misc block fixes from Jens Axboe:
"Stuff that got collected after the merge window opened. This
contains:
- NVMe:
- Fix for non-striped transfer size setting for NVMe from
Sathyavathi.
- (Some) support for the weird Apple nvme controller in the
macbooks. From Stephan Günther.
- The error value leak for dax from Al.
- A few minor blk-mq tweaks from me.
- Add the new linux-block@vger.kernel.org mailing list to the
MAINTAINERS file.
- Discard fix for brd, from Jan.
- A kerneldoc warning for block core from Randy.
- An older fix from Vivek, converting a WARN_ON() to a rate limited
printk when a device is hot removed with dirty inodes"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: don't hardcode blk_qc_t -> tag mask
dax_io(): don't let non-error value escape via retval instead of EFAULT
block: fix blk-core.c kernel-doc warning
fs/block_dev.c: Remove WARN_ON() when inode writeback fails
NVMe: add support for Apple NVMe controller
NVMe: use split lo_hi_{read,write}q
blk-mq: mark __blk_mq_complete_request() static
MAINTAINERS: add reference to new linux-block list
NVMe: Increase the max transfer size when mdts is 0
brd: Refuse improperly aligned discard requests
Linus Torvalds [Thu, 12 Nov 2015 23:48:10 +0000 (15:48 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/linux-security
Pull security subsystem fixes from James Morris:
"This includes several fixes for TPM, as well as a fix for the x.509
certificate parser to address CVE-2015-5327"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
X.509: Fix the time validation [ver #2]
tpm: fix compat 'ppi' link handling in tpm_chip_register()
tpm: fix missing migratable flag in sealing functionality for TPM2
TPM: revert the list handling logic fixed in
398a1e7
TPM: Avoid reference to potentially freed memory
tpm_tis: restore IRQ vector in IO memory after failed probing
tpm_tis: free irq after probing
Linus Torvalds [Thu, 12 Nov 2015 23:33:11 +0000 (15:33 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes and clean-ups from Catalin Marinas:
"Here's a second pull request for this merging window with some
fixes/clean-ups:
- __cmpxchg_double*() return type fix to avoid truncation of a long
to int and subsequent logical "not" in cmpxchg_double()
misinterpreting the operation success/failure
- BPF fixes for mod and div by zero
- Fix compilation with STRICT_MM_TYPECHECKS enabled
- VDSO build fix without libgcov
- Some static and __maybe_unused annotations
- Kconfig clean-up (FRAME_POINTER)
- defconfig update for CRYPTO_CRC32_ARM64"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: suspend: make hw_breakpoint_restore static
arm64: mmu: make split_pud and fixup_executable static
arm64: smp: make of_parse_and_init_cpus static
arm64: use linux/types.h in kvm.h
arm64: build vdso without libgcov
arm64: mark cpus_have_hwcap as __maybe_unused
arm64: remove redundant FRAME_POINTER kconfig option and force to select it
arm64: fix R/O permissions of FDT mapping
arm64: fix STRICT_MM_TYPECHECKS issue in PTE_CONT manipulation
arm64: bpf: fix mod-by-zero case
arm64: bpf: fix div-by-zero case
arm64: Enable CRYPTO_CRC32_ARM64 in defconfig
arm64: cmpxchg_dbl: fix return value type
Linus Torvalds [Thu, 12 Nov 2015 23:26:39 +0000 (15:26 -0800)]
Merge tag 'for-4.4' of git://git.osdn.jp/gitroot/uclinux-h8/linux
Pull h8300 updates from Yoshinori Sato:
"Some bug fixes"
* tag 'for-4.4' of git://git.osdn.jp/gitroot/uclinux-h8/linux:
h8300: enable CLKSRC_OF
h8300: Don't set CROSS_COMPILE unconditionally
asm-generic: {get,put}_user ptr argument evaluate only 1 time
h8300: bit io fix
h8300: zImage fix
h8300: register address fix
h8300: Fix alignment for .data
h8300: unaligned divcr register support.
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