Arnd Bergmann [Thu, 8 May 2014 13:52:20 +0000 (15:52 +0200)]
usb: ohci: sort out dependencies for lpc32xx and omap
The dependency on the isp1301 driver is not something that
should be in the main OHCI driver but rather the SoC specific
part of it.
This moves the dependency for LPC32xx into USB_OHCI_HCD_LPC32XX,
and changes the 'select ISP1301_OMAP' to a similar 'depends on'.
Since the same dependency exists for the client driver, do the
same change there.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-omap@vger.kernel.org
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arnd Bergmann [Thu, 8 May 2014 13:52:21 +0000 (15:52 +0200)]
usb: ohci-da8xx can only be built-in
The PHY setup code of the TI DaVinci DA8xx OHCI controller
uses ad-hoc register access using a pointer that is meant to
be used only by the DaVinci platform implementation and that
is intentionally not exported to loadable modules. This results
in a link error on configurations that use a modular OHCI
code on this platform.
While the proper solution for this problem would be to
implement a real PHY driver shared by ohci-da8xx and musb-da8xx,
this patch for now just works around the build error by
only allowing the ohci-da8xx code to be built-in.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arnd Bergmann [Thu, 8 May 2014 13:52:19 +0000 (15:52 +0200)]
usb: xhci: avoid warning for !PM_SLEEP
If we build a kernel with PM_SUSPEND set and no PM_SLEEP,
we get a build warning in the xhci-plat driver about unused
functions.
To fix this, use "#ifdef CONFIG_PM_SLEEP", like we do in most
other drivers nowadays.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mathias Nyman <mathias.nyman@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dinh Nguyen [Wed, 7 May 2014 13:31:29 +0000 (08:31 -0500)]
usb: dwc2: Add function to calculate correct FIFO sizes
The dwc2 IP on the SOCFPGA cannot use the default HW configured
FIFO sizes. The total FIFO depth as read from GHWCFG3 reports 0x1f80 or 8064
32-bit words. But the GRXFSIZ, GNPTXFSIZ, and HPTXFSIZ register defaults
to 0x2000 or 8192 32-bit words. So the driver cannot just use the fifo sizes
as read from those registers.
For platforms that face the same issue, this commits sets the RX, periodic TX,
and non-periodic TX fifo size to those that are recommended v2.93a spec for
the DWC2 IP. Implements Method #2 from the Synopsys v2.93a spec for the DWC2.
Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dinh Nguyen [Wed, 7 May 2014 13:30:33 +0000 (08:30 -0500)]
usb: dwc2: Disable descriptor dma mode by default
Even though the IP supports Descriptor DMA mode, it does not support SPLIT
transactions in this mode. So the driver, in its currently form, will not
support LS/FS devices when connected to a HS Hub if Descriptor DMA mode is
enabled.
So we should just default to disable descriptor dma mode.
Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gregory CLEMENT [Thu, 15 May 2014 10:17:34 +0000 (12:17 +0200)]
Documentation: dt-bindings: update xhci-platform DT binding
This commit extends the compatible string list of the xhci-platform
binding with the new "armada-375-xhci" and "armada-380-xhci"
compatible strings. It is used to describe the XHCI controller which
is available in the Armada 375 and 38x SoCs.
It also indicates that an optional 'clocks' property is now supported.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gregory CLEMENT [Thu, 15 May 2014 10:17:33 +0000 (12:17 +0200)]
usb: host: xhci-plat: add support for the Armada 375/38x XHCI controllers
The Armada 375 and 38x SoCs come with an XHCI controller that requires
some specific initialization related to the MBus windows
configuration. This patch adds the support for this special
configuration as an XHCI quirk executed during probe.
Two new compatible strings are added to identify the Armada 375 and
Armada 38x XHCI controllers, and therefore enable the relevant quirk.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gregory CLEMENT [Thu, 15 May 2014 10:17:32 +0000 (12:17 +0200)]
usb: host: xhci-plat: add clock support
Some platforms (such as the Armada 38x ones) can gate the clock of
their USB controller. This patch adds the support for one clock in
xhci-plat, by enabling it during probe and disabling it on remove.
To achieve this, it adds a 'struct clk *' member in xhci_hcd. While
only used for now in xhci-plat, it might be used by other drivers in
the future. Moreover, the xhci_hcd structure already holds other
members such as msix_count and msix_entries, which are MSI-X specific,
and therefore only used by xhci-pci.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gregory CLEMENT [Thu, 15 May 2014 10:17:31 +0000 (12:17 +0200)]
usb: host: xhci-plat: sort the headers in alphabetic order
Sorting the headers in alphabetic order will help to reduce the conflict
when adding new headers later.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Petazzoni [Thu, 15 May 2014 10:17:30 +0000 (12:17 +0200)]
Documentation: dt-bindings: update ehci-orion binding documentation
This commit updates the Device Tree binding documentation of
ehci-orion to take into account the fact that we can now optionally
pass a clock and a PHY reference.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gregory CLEMENT [Thu, 15 May 2014 10:17:29 +0000 (12:17 +0200)]
usb: ehci-orion: add optional PHY support
This commit extends the ehci-orion so that it can optionally be passed
a reference to a PHY through the Device Tree. It will be useful for
the Armada 375 SoCs. If no PHY is provided then the behavior of the
driver is unchanged.
[Thomas: use devm_phy_optional_get() so that we handle -EPROBE_DEFER
properly. Also call phy_power_off() when needed, and rename goto
labels.]
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gregory CLEMENT [Thu, 15 May 2014 10:17:28 +0000 (12:17 +0200)]
usb: ehci-orion: fix clock reference leaking
In order to disable the clock in the ->remove() function, a call to
devm_clk_get() is being made, which further increases the reference
count of the clock.
In order to clean this up, a private structure holding a pointer to
the clock is added using the override mechanism provided by the ehci
framework. This makes the driver clock handling much more logical.
The bug was introduced in v3.6, however the ehci framework allowing to
use the override mechanism has only been introduced in v3.8, so this
patch won't apply before it.
[Thomas: reword commit log, fix goto label names.]
Fixes: 8c869edaee07c623066266827371235fb9c12e01 ('ARM: Orion: EHCI: Add support for enabling clocks')
Cc: <stable@vger.kernel.org> # v3.8+
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Petazzoni [Thu, 15 May 2014 10:17:27 +0000 (12:17 +0200)]
usb: ehci-orion: rename error goto labels in ehci_orion_drv_probe()
In preparation to the introduction of additional initialization steps
in ehci_orion_drv_probe(), we rename the error goto labels from err1,
err2 and err3 names to some more meaningful names.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Petazzoni [Thu, 15 May 2014 10:17:26 +0000 (12:17 +0200)]
usb: ehci-orion: use platform_get_irq() for DT probing
Commit
77dae54ab385033e488d8b07045bc7f8d931740f ('ARM: Kirkwood:
ehci-orion: Add device tree binding') added the Device Tree binding
for the ehci-orion driver. To achieve that with the irq, it used the
irq_of_parse_and_map() function when probed in DT-mode, and
platform_get_irq() when probed in non-DT mode.
This is not necessary: platform_get_irq() works just as fine in
DT-mode, since the conversion from DT information to 'struct resource'
is done by the generic layers of the kernel.
Therefore, this commit switches back to use just platform_get_irq().
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Chen [Tue, 29 Apr 2014 00:35:59 +0000 (08:35 +0800)]
usb: common: rename phy-fsm-usb.c to usb-otg-fsm.c
Since usb otg fsm implementation is not related to usb phy.
We move it from usb/phy/ to usb/common/, and rename it to
reflect its real meaning.
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Chen [Tue, 29 Apr 2014 00:35:58 +0000 (08:35 +0800)]
usb: move usb/usb-common.c to usb/common/usb-common.c
Since we will have more usb-common things, and it will let
usb-common.c be larger and larger, we create a folder named usb/common
for all usb common things.
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fabio Estevam [Tue, 29 Apr 2014 03:49:42 +0000 (00:49 -0300)]
usb: dwc2: Remove '0x' notation when using %pad format
%pad notation automatically prints in hexadecimal format (with '0x'), so remove
the unneeded '0x' to avoid a '0x0x' string.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Mosberger [Tue, 29 Apr 2014 04:14:07 +0000 (22:14 -0600)]
Add support for using a MAX3421E chip as a host driver.
Signed-off-by: David Mosberger <davidm@egauge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Pugliese [Mon, 28 Apr 2014 19:53:27 +0000 (14:53 -0500)]
uwb: fix variable set but not used warnings
Fix variable set but not used warnings in UWB.
Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Pugliese [Mon, 28 Apr 2014 19:53:26 +0000 (14:53 -0500)]
uwb: comment typo fix
Comment typo fix.
Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Pugliese [Mon, 28 Apr 2014 19:53:25 +0000 (14:53 -0500)]
uwb: whitespace and line length cleanups
Fix whitespace and line length issues reported by checkpatch.
Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Chen [Mon, 28 Apr 2014 06:12:38 +0000 (14:12 +0800)]
usb: core: remove the Kconfig entry for USB_DEBUG
Since we have already removed the usage of CONFIG_USB_DEBUG, it is
meaningless that there is still a configuration entry for CONFIG_USB_DEBUG.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Yijing Wang [Mon, 28 Apr 2014 11:35:09 +0000 (19:35 +0800)]
usb: remove redundant D0 power state set
Pci_enable_device() will set device power state to D0,
so it's no need to do it again after call pci_enable_device().
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rickard Strandqvist [Fri, 16 May 2014 15:39:13 +0000 (17:39 +0200)]
USB: keyspan: fix potential null pointer dereference
Move control-urb dereference to after NULL-check. There is otherwise a
risk of a possible null pointer dereference.
Was largely found by using a static code analysis program called
cppcheck.
[Johan: modify commit message somewhat ]
[gkh: remove stable tag as it's not a real problem that anyone has ever hit]
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:52 +0000 (19:23 +0200)]
USB: wusbcore: fix control-pipe directions
Fix incorrect pipe directions in control requests (which has been
silently fixed up by USB core).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:51 +0000 (19:23 +0200)]
USB: cdc-acm: use tty-port dtr_rts
Add dtr_rts tty-port operation which implements proper DTR/RTS handling
(e.g. only lower DTR/RTS during shutdown if HUPCL is set).
Note that modem-control locking still needs to be added throughout the
driver.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:50 +0000 (19:23 +0200)]
USB: cdc-acm: remove redundant usb_mark_last_busy
There's no need to call usb_mark_last_busy after having increased the PM
counter in write(). The device will be marked busy by USB core when the
PM counter is balanced in the completion handler.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:49 +0000 (19:23 +0200)]
USB: cdc-acm: do not update PM busy on read errors
There's no need to update the runtime PM last_busy field on read urb
errors (e.g. when the urb is being killed on shutdown).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:48 +0000 (19:23 +0200)]
USB: cdc-acm: minimise no-suspend window during shutdown
Now that acm_set_control() handles runtime PM properly, the only
remaining reason for the PM operations in shutdown is to clear the
needs_remote_wakeup flag before the final put.
Note that this also means that we now need to grab the write_lock to
prevent racing with resume.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:47 +0000 (19:23 +0200)]
USB: cdc-acm: remove redundant disconnected test from shutdown
Remove redundant disconnect test from shutdown(), which is never called
post disconnect() where we do synchronous hangup.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:46 +0000 (19:23 +0200)]
USB: cdc-acm: simplify runtime PM locking
We can simply the runtime PM locking as there's no need to check the
susp_count in the read path (at least not since killing the rx tasklet).
Specifically, the read urbs will never be resubmitted by the completion
handler when killed during suspend.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:45 +0000 (19:23 +0200)]
USB: cdc-acm: fix runtime PM imbalance at shutdown
Make sure only to decrement the PM counters if they were actually
incremented.
Note that the USB PM counter, but not necessarily the driver core PM
counter, is reset when the interface is unbound.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:44 +0000 (19:23 +0200)]
USB: cdc-acm: fix I/O after failed open
Make sure to kill any already submitted read urbs on read-urb submission
failures in open in order to prevent doing I/O for a closed port.
Fixes: 088c64f81284 ("USB: cdc-acm: re-write read processing")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:43 +0000 (19:23 +0200)]
USB: cdc-acm: fix failed open not being detected
Fix errors during open not being returned to userspace. Specifically,
failed control-line manipulations or control or read urb submissions
would not be detected.
Fixes: 7fb57a019f94 ("USB: cdc-acm: Fix potential deadlock (lockdep
warning)")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:42 +0000 (19:23 +0200)]
USB: cdc-acm: fix open and suspend race
We must not do the usb_autopm_put_interface() before submitting the read
urbs or we might end up doing I/O to a suspended device.
Fixes: 088c64f81284 ("USB: cdc-acm: re-write read processing")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:41 +0000 (19:23 +0200)]
USB: cdc-acm: fix potential urb leak and PM imbalance in write
Make sure to check return value of autopm get in write() in order to
avoid urb leak and PM counter imbalance on errors.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Cc: <stable@vger.kernel.org> # v2.6.27
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:40 +0000 (19:23 +0200)]
USB: cdc-acm: fix shutdown and suspend race
We should stop I/O unconditionally at suspend rather than rely on the
tty-port initialised flag (which is set prior to stopping I/O during
shutdown) in order to prevent suspend returning with URBs still active.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Cc: <stable@vger.kernel.org> # v2.6.27
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:39 +0000 (19:23 +0200)]
USB: cdc-acm: fix runtime PM for control messages
Fix runtime PM handling of control messages by adding the required PM
counter operations.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Cc: <stable@vger.kernel.org> # v2.6.27
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:38 +0000 (19:23 +0200)]
USB: cdc-acm: fix broken runtime suspend
The current ACM runtime-suspend implementation is broken in several
ways:
Firstly, it buffers only the first write request being made while
suspended -- any further writes are silently dropped.
Secondly, writes being dropped also leak write urbs, which are never
reclaimed (until the device is unbound).
Thirdly, even the single buffered write is not cleared at shutdown
(which may happen before the device is resumed), something which can
lead to another urb leak as well as a PM usage-counter leak.
Fix this by implementing a delayed-write queue using urb anchors and
making sure to discard the queue properly at shutdown.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Reported-by: Xiao Jin <jin.xiao@intel.com>
Cc: <stable@vger.kernel.org> # v2.6.27
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:37 +0000 (19:23 +0200)]
USB: cdc-acm: fix write and resume race
Fix race between write() and resume() due to improper locking that could
lead to writes being reordered.
Resume must be done atomically and susp_count be protected by the
write_lock in order to prevent racing with write(). This could otherwise
lead to writes being reordered if write() grabs the write_lock after
susp_count is decremented, but before the delayed urb is submitted.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Cc: <stable@vger.kernel.org> # v2.6.27
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:36 +0000 (19:23 +0200)]
USB: cdc-acm: fix write and suspend race
Fix race between write() and suspend() which could lead to writes being
dropped (or I/O while suspended) if the device is runtime suspended
while a write request is being processed.
Specifically, suspend() releases the write_lock after determining the
device is idle but before incrementing the susp_count, thus leaving a
window where a concurrent write() can submit an urb.
Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices
that support remote wakeup")
Cc: <stable@vger.kernel.org> # v2.6.27
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:35 +0000 (19:23 +0200)]
USB: kobil_sct: fix control requests without data stage
Fix incorrect pipe directions and remove bogus data buffer arguments
from control requests without data stage.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:34 +0000 (19:23 +0200)]
USB: serial: remove overly defensive port tests
The only way a port pointer may be NULL is if probe() failed, and in
that case neither disconnect(), resume(), or reset_resume() will be
called.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:33 +0000 (19:23 +0200)]
USB: serial: fix potential runtime pm imbalance at device remove
Only call usb_autopm_put_interface() if the corresponding
usb_autopm_get_interface() was successful.
This prevents a potential runtime PM counter imbalance should
usb_autopm_get_interface() fail. Note that the USB PM usage counter is
reset when the interface is unbound, but that the runtime PM counter may
be left unbalanced.
Also add comment on why we don't need to worry about racing
resume/suspend on autopm_get failures.
Fixes: d5fd650cfc7f ("usb: serial: prevent suspend/resume from racing
against probe/remove")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:32 +0000 (19:23 +0200)]
USB: usb_wwan: do not resume I/O on closing ports
Use tty-port initialised flag rather than private flag to determine when
port is closing down.
Since the tty-port flag is set prior to dropping DTR/RTS (when HUPCL is
set) this avoid submitting the read urbs when resuming the interface in
dtr_rts() only to immediately kill them again in shutdown().
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:31 +0000 (19:23 +0200)]
USB: usb_wwan: report failed submissions as errors
Promote failed-submission messages in open() and write() to error log
level.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:30 +0000 (19:23 +0200)]
USB: usb_wwan: remove bogus function prototype
The usb_wwan_send_setup() function has never existed.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:29 +0000 (19:23 +0200)]
USB: usb_wwan: remove some superfluous comments
Remove some more outdated or superfluous comments.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:28 +0000 (19:23 +0200)]
USB: usb_wwan: remove comment from close
Remove superfluous and cryptic comment from close.
It should be obvious that we're balancing the autopm_put in open (and
that operation already mentions the autopm_get done in the USB serial
core).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:27 +0000 (19:23 +0200)]
USB: usb_wwan: clean up delayed-urb submission
Clean up and rename delay-urb submission function using a more
descriptive name.
Also add comment on locking assumptions.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:26 +0000 (19:23 +0200)]
USB: usb_wwan: use interface-data accessors
Use usb_get_serial_data() rather than accessing the private pointer
directly.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:25 +0000 (19:23 +0200)]
USB: usb_wwan: make resume error messages uniform
Make resume error messages uniform.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:24 +0000 (19:23 +0200)]
USB: usb_wwan: kill interrupt urb explicitly at suspend
As the port interrupt URB is submitted by the subdriver at open, we
should also kill it explicitly at suspend (even though this will be
taken care of by USB serial core otherwise).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:23 +0000 (19:23 +0200)]
USB: usb_wwan: remove redundant urb kill from port remove
Remove redundant usb_kill_urb from port remove, which is called
post-shutdown (close).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:22 +0000 (19:23 +0200)]
USB: usb_wwan: remove unimplemented set_termios
The driver does not implement set_termios so the operation can be left
unset (tty will do the tty_termios_copy_hw for us).
Note that the send_setup call is bogus as it really only sets DTR/RTS
to their current values.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:21 +0000 (19:23 +0200)]
USB: usb_wwan: remove redundant modem-control request
The tty-port implementation has already made sure that DTR/RTS have been
raised by calling dtr_rts so remove the redundant call from open.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:20 +0000 (19:23 +0200)]
USB: usb_wwan: fix remote wakeup
Make sure that needs_remote_wake up is always set when there are open
ports.
Currently close() would unconditionally set needs_remote_wakeup to 0
even though there might still be open ports. This could lead to blocked
input and possibly dropped data on devices that do not support remote
wakeup (and which must therefore not be runtime suspended while open).
Add an open_ports counter (protected by the susp_lock) and only clear
needs_remote_wakeup when the last port is closed.
Note that there are currently no multi-port drivers using the usb_wwan
implementation.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:19 +0000 (19:23 +0200)]
USB: usb_wwan: fix discarded writes on resume errors
There's no reason not to try sending off any further delayed write urbs,
should one urb-submission fail.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:18 +0000 (19:23 +0200)]
USB: usb_wwan: fix potential blocked I/O after resume
Keep trying to submit urbs rather than bail out on first read-urb
submission error, which would also prevent I/O for any further ports
from being resumed.
Instead keep an error count, for all types of failed submissions, and
let USB core know that something went wrong.
Also make sure to always clear the suspended flag. Currently a failed
read-urb submission would prevent cached writes as well as any
subsequent writes from being submitted until next suspend-resume cycle,
something which may not even necessarily happen.
Note that USB core currently only logs an error if an interface resume
failed.
Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:17 +0000 (19:23 +0200)]
USB: usb_wwan: fix potential NULL-deref at resume
The interrupt urb was submitted unconditionally at resume, something
which could lead to a NULL-pointer dereference in the urb completion
handler as resume may be called after the port and port data is gone.
Fix this by making sure the interrupt urb is only submitted and active
when the port is open.
Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")
Cc: <stable@vger.kernel.org> # v2.6.32: 032129cb03df
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:16 +0000 (19:23 +0200)]
USB: usb_wwan: fix urb leak at shutdown
The delayed-write queue was never emptied at shutdown (close), something
which could lead to leaked urbs if the port is closed before being
runtime resumed due to a write.
When this happens the output buffer would not drain on close
(closing_wait timeout), and after consecutive opens, writes could be
corrupted with previously buffered data, transfered with reduced
throughput or completely blocked.
Note that unbusy_queued_urb() was simply moved out of CONFIG_PM.
Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:15 +0000 (19:23 +0200)]
USB: usb_wwan: fix write and suspend race
Fix race between write() and suspend() which could lead to writes being
dropped (or I/O while suspended) if the device is runtime suspended
while a write request is being processed.
Specifically, suspend() releases the susp_lock after determining the
device is idle but before setting the suspended flag, thus leaving a
window where a concurrent write() can submit an urb.
Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xiao jin [Mon, 26 May 2014 17:23:14 +0000 (19:23 +0200)]
USB: usb_wwan: fix race between write and resume
We find a race between write and resume. usb_wwan_resume run play_delayed()
and spin_unlock, but intfdata->suspended still is not set to zero.
At this time usb_wwan_write is called and anchor the urb to delay
list. Then resume keep running but the delayed urb have no chance
to be commit until next resume. If the time of next resume is far
away, tty will be blocked in tty_wait_until_sent during time. The
race also can lead to writes being reordered.
This patch put play_Delayed and intfdata->suspended together in the
spinlock, it's to avoid the write race during resume.
Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")
Signed-off-by: xiao jin <jin.xiao@intel.com>
Signed-off-by: Zhang, Qi1 <qi1.zhang@intel.com>
Reviewed-by: David Cohen <david.a.cohen@linux.intel.com>
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xiao jin [Mon, 26 May 2014 17:23:13 +0000 (19:23 +0200)]
USB: usb_wwan: fix urb leak in write error path
When enable usb serial for modem data, sometimes the tty is blocked
in tty_wait_until_sent because portdata->out_busy always is set and
have no chance to be cleared.
We find a bug in write error path. usb_wwan_write set portdata->out_busy
firstly, then try autopm async with error. No out urb submit and no
usb_wwan_outdat_callback to this write, portdata->out_busy can't be
cleared.
This patch clear portdata->out_busy if usb_wwan_write try autopm async
with error.
Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")
Signed-off-by: xiao jin <jin.xiao@intel.com>
Signed-off-by: Zhang, Qi1 <qi1.zhang@intel.com>
Reviewed-by: David Cohen <david.a.cohen@linux.intel.com>
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:12 +0000 (19:23 +0200)]
USB: option: add missing usb_mark_last_busy
We should call usb_mark_last_busy in all input paths, including the
interrupt completion handler.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:11 +0000 (19:23 +0200)]
USB: option: fix line-control pipe direction
The option line-control request has been using the wrong pipe direction,
while relying on USB core to fix it up.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:10 +0000 (19:23 +0200)]
USB: option: fix runtime PM handling
Fix potential I/O while runtime suspended due to missing PM operations
in send_setup.
Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:09 +0000 (19:23 +0200)]
USB: sierra: do not resume I/O on closing ports
Use tty-port initialised flag rather than private flag to determine when
port is closing down.
Since the tty-port flag is set prior to dropping DTR/RTS (when HUPCL is
set) this avoid submitting the read urbs when resuming the interface in
dtr_rts() only to immediately kill them again in shutdown().
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:08 +0000 (19:23 +0200)]
USB: sierra: minimise no-suspend window during close
Move usb_autopm_get_interface_no_resume to the end of close(). This
makes the window during which suspend is prevented before the final put
in USB serial core slightly smaller.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:07 +0000 (19:23 +0200)]
USB: sierra: refactor delayed-urb submission
Refactor and clean up delayed-urb submission at resume.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:06 +0000 (19:23 +0200)]
USB: sierra: clean up suspend
Clean up suspend() somewhat and make sure to always set the suspended
flag (although it's only used for runtime PM) in order to match
resume().
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:05 +0000 (19:23 +0200)]
USB: sierra: use interface-data accessors
Use usb_get_serial_data() rather than accessing the private pointer
directly.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:04 +0000 (19:23 +0200)]
USB: sierra: remove redundant modem-control requests
The tty-port implementation has already made sure that DTR/RTS have been
raised and lowered by calling dtr_rts so remove the redundant calls from
open and close.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:03 +0000 (19:23 +0200)]
USB: sierra: do not resume I/O on closed ports
Do not resume any I/O, including the delayed write queue, on closed
ports.
Note that this currently has no functional impact due to the
usb_autopm_get_interface() in close(), but that call is about to be
removed by a follow-up patch.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:02 +0000 (19:23 +0200)]
USB: sierra: remove disconnected test from close
Remove no longer needed disconnected test from close, which is never
called post disconnect (and drivers must handle failed I/O during
disconnect anyway).
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:01 +0000 (19:23 +0200)]
USB: sierra: remove unimplemented set_termios
The driver does not implement set_termios so the operation can be left
unset (tty will do the tty_termios_copy_hw for us).
Note that the send_setup call is bogus as it really only sets DTR/RTS
to their current values.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:23:00 +0000 (19:23 +0200)]
USB: sierra: remove unused variable
Remove unused variable from sierra_release_urb.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:59 +0000 (19:22 +0200)]
USB: sierra: remove bogus endpoint test
Remove bogus endpoint-address test which is never true.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:58 +0000 (19:22 +0200)]
USB: sierra: fix line-control pipe direction
The sierra line-control request has been using the wrong pipe direction,
while relying on USB core to fix it up.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:57 +0000 (19:22 +0200)]
USB: sierra: fix resume error reporting
Add error message to resume error path and make sure to also return an
error when failing to submit a cached write.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:56 +0000 (19:22 +0200)]
USB: sierra: fix urbs not being killed on shutdown
Make sure to stop all I/O, including any active write urbs, at shutdown.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:55 +0000 (19:22 +0200)]
USB: sierra: fix characters being dropped at close
Fix characters potentially being dropped at close due to missing
chars_in_buffer implementation.
Note that currently the write urbs are not even killed at close (will be
fixed separately), but this could still lead to dropped data since we
have lowered DTR/RTS.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:54 +0000 (19:22 +0200)]
USB: sierra: fix remote wakeup
Make sure that needs_remote_wake up is always set when there are open
ports.
Currently close() would unconditionally set needs_remote_wakeup to 0
even though there might still be open ports. This could lead to blocked
input and possibly dropped data on devices that do not support remote
wakeup (and which must therefore not be runtime suspended while open).
Add an open_ports counter (protected by the susp_lock) and only clear
needs_remote_wakeup when the last port is closed.
Fixes: e6929a9020ac ("USB: support for autosuspend in sierra while
online")
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:53 +0000 (19:22 +0200)]
USB: sierra: fix urb and memory leak on disconnect
The delayed-write queue was never emptied on disconnect, something which
would lead to leaked urbs and transfer buffers if the device is
disconnected before being runtime resumed due to a write.
Fixes: e6929a9020ac ("USB: support for autosuspend in sierra while
online")
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:52 +0000 (19:22 +0200)]
USB: sierra: fix urb and memory leak in resume error path
Neither the transfer buffer or the urb itself were released in the
resume error path for delayed writes. Also on errors, the remainder of
the queue was not even processed, which leads to further urb and buffer
leaks.
The same error path also failed to balance the outstanding-urb counter,
something which results in degraded throughput or completely blocked
writes.
Fix this by releasing urb and buffer and balancing counters on errors,
and by always processing the whole queue even when submission of one urb
fails.
Fixes: e6929a9020ac ("USB: support for autosuspend in sierra while
online")
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:51 +0000 (19:22 +0200)]
USB: sierra: fix use after free at suspend/resume
Fix use after free or NULL-pointer dereference during suspend and
resume.
The port data may never have been allocated (port probe failed)
or may already have been released by port_remove (e.g. driver is
unloaded) when suspend and resume are called.
Fixes: e6929a9020ac ("USB: support for autosuspend in sierra while
online")
Cc: <stable@vger.kernel.org> # v2.6.32
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Mon, 26 May 2014 17:22:50 +0000 (19:22 +0200)]
USB: sierra: fix AA deadlock in open error path
Fix AA deadlock in open error path that would call close() and try to
grab the already held disc_mutex.
Fixes: b9a44bc19f48 ("sierra: driver urb handling improvements")
Cc: <stable@vger.kernel.org> # v2.6.31
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Joe Perches [Tue, 20 May 2014 20:09:33 +0000 (13:09 -0700)]
USB: iowarrior: Convert local dbg macro to dev_dbg
Use a more standard logging style.
Add terminating newlines to formats.
Remove __func__ as that can be added via dynamic debug.
Remove now unnecessary debug module parameter.
Remove the dbg macro too.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Joe Perches [Fri, 25 Apr 2014 01:51:02 +0000 (18:51 -0700)]
USB: appledisplay: Convert /n to \n
Use a newline character appropriately.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Sun, 27 Apr 2014 14:47:46 +0000 (16:47 +0200)]
usb: qcserial: remove interface number matching
Matching on interface numbers was not such a good idea
for multi-function serial devices after all. It is much
better do create well defined device layouts, allowing
a single match entry per device.
Remove this now unused code.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Sun, 27 Apr 2014 14:47:45 +0000 (16:47 +0200)]
usb: qcserial: define and use Sierra Wireless layout
All the "non Gobi" Qualcomm based devices handled by this
driver share a common standard Sierra Wireless specific
layout. Adding code specifically for this layout allow
us to reduce the number of match entries per device from
three to one.
This change will result in a penalty wrt stable backports,
but simplifies new Sierra device addtitions in the long
term.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Sun, 27 Apr 2014 14:47:44 +0000 (16:47 +0200)]
usb: qcserial: refactor device layout selection
Preparing for more supported standard device layouts. Keeping
the matching macros unchanged to avoid breaking stable
backporting of new device additions.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bjørn Mork [Sun, 27 Apr 2014 14:47:43 +0000 (16:47 +0200)]
usb: qcserial: fix multiline comment coding style
Use a consistent style for all multiline comments.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Pugliese [Fri, 25 Apr 2014 15:30:33 +0000 (10:30 -0500)]
uwb: add error messages when reservation establish fails
Add better error messages during the channel change/reservation establish
process.
Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas Pugliese [Fri, 25 Apr 2014 15:30:32 +0000 (10:30 -0500)]
uwb: fix channel change failure
Make the transition to the UWB_RSV_STATE_NONE state synchronous so that
there is not a race between uwb_rsv_terminate and uwb_rsv_establish.
uwb_rsv_terminate would set the rsv->state to UWB_RSV_STATE_NONE but did
not release the stream resource until a 320ms timeout had expired. If a
user called uwb_rsv_establish during that time, it could fail to
establish the reservation because no stream resources were available.
This patch removes the timer from the uwb_rsv_terminate process since it
is not needed when transitioning to UWB_RSV_STATE_NONE.
Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vivek Gautam [Sat, 10 May 2014 12:00:10 +0000 (17:30 +0530)]
usb: host: ohci-exynos: Use devm_ioremap_resource instead of devm_ioremap
Using devm_ioremap_resource() API should actually be preferred over
devm_ioremap(), since the former request the mem region first and then
gives back the ioremap'ed memory pointer.
devm_ioremap_resource() calls request_mem_region(), therby preventing
other drivers to make any overlapping call to the same region.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vivek Gautam [Sat, 10 May 2014 12:00:09 +0000 (17:30 +0530)]
usb: host: ehci-tegra: Use devm_ioremap_resource instead of devm_ioremap
Using devm_ioremap_resource() API should actually be preferred over
devm_ioremap(), since the former request the mem region first and then
gives back the ioremap'ed memory pointer.
devm_ioremap_resource() calls request_mem_region(), therby preventing
other drivers to make any overlapping call to the same region.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vivek Gautam [Sat, 10 May 2014 12:00:08 +0000 (17:30 +0530)]
usb: host: ehci-spear: Use devm_ioremap_resource instead of devm_ioremap
Using devm_ioremap_resource() API should actually be preferred over
devm_ioremap(), since the former request the mem region first and then
gives back the ioremap'ed memory pointer.
devm_ioremap_resource() calls request_mem_region(), therby preventing
other drivers to make any overlapping call to the same region.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vivek Gautam [Sat, 10 May 2014 12:00:07 +0000 (17:30 +0530)]
usb: host: ehci-mv: Use devm_ioremap_resource instead of devm_ioremap
Using devm_ioremap_resource() API should actually be preferred over
devm_ioremap(), since the former request the mem region first and then
gives back the ioremap'ed memory pointer.
devm_ioremap_resource() calls request_mem_region(), therby preventing
other drivers to make any overlapping call to the same region.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vivek Gautam [Sat, 10 May 2014 12:00:06 +0000 (17:30 +0530)]
usb: host: ehci-msm: Use devm_ioremap_resource instead of devm_ioremap
Using devm_ioremap_resource() API should actually be preferred over
devm_ioremap(), since the former request the mem region first and then
gives back the ioremap'ed memory pointer.
devm_ioremap_resource() calls request_mem_region(), therby preventing
other drivers to make any overlapping call to the same region.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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