Dan Carpenter [Wed, 27 Feb 2013 05:13:45 +0000 (08:13 +0300)]
wlan-ng: add a bounds check
I'm not sure where these results come from, but it can't hurt to
add a sanity check the array offset. The .results[] array on the
next line has HFA384x_CHINFORESULT_MAX (16) elements.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dan Carpenter [Wed, 27 Feb 2013 05:12:06 +0000 (08:12 +0300)]
wlan-ng: clean up prism2sta_inf_chinforesults()
This function is ugly because it hits against the 80 character
limit. This patch does several things to clean it up.
1) Introduces "result" instead of inf->info.chinforesult.result[n].
2) Reverses the ".scanchannels & (1 << i)" so everthing can be
pulled in one indent level.
3) Use "chan" instead of "channel".
4) Tweaks the line breaks to the call to pr_debug().
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Laurent Navet [Mon, 25 Feb 2013 13:08:49 +0000 (14:08 +0100)]
staging: line6: pod.c: fix checkpatch warning
- WARNING: braces {} are not necessary for single statement blocks
Signed-off-by: Laurent Navet <laurent.navet@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kurt Kanzenbach [Fri, 22 Feb 2013 11:13:34 +0000 (12:13 +0100)]
staging: usbip: removed lines over 80 characters
This patch fixes the following checkpatch warning:
-WARNING: line over 80 characters
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stefan Reif [Fri, 22 Feb 2013 11:13:33 +0000 (12:13 +0100)]
staging: usbip: userspace: fix whitespace errors
This patch fixes the following checkpatch errors:
-ERROR: space required after that ','
-ERROR: spaces required around that '='
-ERROR: space prohibited before that close parenthesis
-WARNING: please, no space before tabs
Signed-off-by: Stefan Reif <ke42caxa@cip.cs.fau.de>
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stefan Reif [Fri, 22 Feb 2013 11:13:32 +0000 (12:13 +0100)]
staging: usbip: remove unnecessary braces
This patch fixes the following checkpatch warning:
-WARNING: braces {} are not necessary for any arm of this statement
Signed-off-by: Stefan Reif <ke42caxa@cip.cs.fau.de>
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kurt Kanzenbach [Fri, 22 Feb 2013 11:13:31 +0000 (12:13 +0100)]
staging: usbip: userspace: libsrc: added missing space
This patch fixes the following checkpatch warning:
-WARNING: missing space after enum definition
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kurt Kanzenbach [Fri, 22 Feb 2013 11:13:30 +0000 (12:13 +0100)]
staging: usbip: userspace: libsrc: removed assignments in if conditions
This patch fixes the following checkpatch error:
-ERROR: do not use assignment in if condition
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kurt Kanzenbach [Fri, 22 Feb 2013 11:13:29 +0000 (12:13 +0100)]
staging: usbip: userspace: libsrc: replaced lines over 80 characters
This patch fixes some of the following checkpatch warnings:
-WARNING: line over 80 characters
We did not split format strings for readability.
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kurt Kanzenbach [Fri, 22 Feb 2013 11:13:28 +0000 (12:13 +0100)]
staging: usbip: userspace: libsrc: (foo*) should be (foo *)
This patch fixes the following checkpatch error:
-ERROR: "(foo*)" should be "(foo *)"
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kurt Kanzenbach [Fri, 22 Feb 2013 11:13:27 +0000 (12:13 +0100)]
staging: usbip: userspace: libsrc: spaces required around that '='
This patch fixes the following checkpatch error:
-ERROR: spaces required around that '='
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kurt Kanzenbach [Fri, 22 Feb 2013 11:13:26 +0000 (12:13 +0100)]
staging: usbip: userspace: libsrc: do not init static/globals to 0
This patch fixes the following checkpatch errors:
-ERROR: do not initialise statics to 0 or NULL
-ERROR: do not initialise globals to 0 or NULL
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kurt Kanzenbach [Fri, 22 Feb 2013 11:13:25 +0000 (12:13 +0100)]
staging: usbip: userspace: libsrc: fix indention
This patch fixes the following checkpatch warning:
-ERROR: code indent should use tabs where possible
-WARNING: suspect code indent for conditional statements
Signed-off-by: Kurt Kanzenbach <ly80toro@cip.cs.fau.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Syam Sidhardhan [Wed, 6 Mar 2013 20:14:54 +0000 (01:44 +0530)]
staging: silicom: Remove redundant NULL check before kfree
kfree on NULL pointer is a no-op.
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexandru Gheorghiu [Tue, 26 Feb 2013 14:53:16 +0000 (16:53 +0200)]
Staging: silicom: bp_mod: Removed trailing whitespaces
Fixed coding style issue.
Signed-off-by: Alexandru Gheorghiu <gheorghiuandru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Randy Dunlap [Thu, 21 Feb 2013 02:32:28 +0000 (18:32 -0800)]
staging: fix all sparse warnings in silicom/bypasslib/
Fix all sparse warning in drivers/staging/silicom/bypasslib/,
e.g.:
drivers/staging/silicom/bypasslib/bypass.c:471:21: warning: non-ANSI function declaration of function 'init_lib_module'
drivers/staging/silicom/bypasslib/bypass.c:478:25: warning: non-ANSI function declaration of function 'cleanup_lib_module'
drivers/staging/silicom/bypasslib/bypass.c:137:5: warning: symbol 'is_bypass_dev' was not declared. Should it be static?
drivers/staging/silicom/bypasslib/bypass.c:182:5: warning: symbol 'is_bypass' was not declared. Should it be static?
drivers/staging/silicom/bypasslib/bypass.c:192:5: warning: symbol 'get_bypass_slave' was not declared. Should it be static?
drivers/staging/silicom/bypasslib/bypass.c:197:5: warning: symbol 'get_bypass_caps' was not declared. Should it be static?
drivers/staging/silicom/bypasslib/bypass.c:202:5: warning: symbol 'get_wd_set_caps' was not declared. Should it be static?
etc.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 17:50:20 +0000 (18:50 +0100)]
staging/gdm72xx: Remove duplicated code in gdm_qos.c
The first branch of the if statement is ended with a return thus there
is no need for an else if, and thus we can move the duplicated code to
the top and use it for the other two branches.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 17:50:19 +0000 (18:50 +0100)]
staging/gdm72xx: Remove unused variable in gdm_qos.c
len is never read after assignment, thus can be removed.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 17:50:18 +0000 (18:50 +0100)]
staging/gdm72xx: Include corresponding header file (fix sparse warning)
sdio_boot.c and netlink_k.c both have a corresponding header file with
their function prototypes but fail to include them, which leads to the
following sparse warnings:
sdio_boot.c:135:5: warning: symbol 'sdio_boot' was not declared. Should it be static?
netlink_k.c:89:13: warning: symbol 'netlink_init' was not declared. Should it be static?
netlink_k.c:109:6: warning: symbol 'netlink_exit' was not declared. Should it be static?
netlink_k.c:114:5: warning: symbol 'netlink_send' was not declared. Should it be static?
-> Add the include files and silence the warning
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Joe Perches [Wed, 27 Feb 2013 00:33:11 +0000 (16:33 -0800)]
staging: slicoss: Remove dma_addr_t cast compilation warnings
Eliminate some warnings by casting to unsigned long before
casting a dma_addr_t value to a pointer.
btw:
Does slicoss always work on x86-32?
Is a pshmem guaranteed to be accessible
by a 32 bit address?
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Mon, 18 Feb 2013 23:12:48 +0000 (00:12 +0100)]
staging/sm7xxfb: Convert to SIMPLE_DEV_PM_OPS
Instead of assigning the pm_ops fields individually we can simply use
SIMPLE_DEV_PM_OPS.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Acked-by: Javier Muñoz <jmunhoz@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 04:18:52 +0000 (05:18 +0100)]
staging/slicoss: Use ether_crc for mac hash calculation
Instead of performing the hash calculation for the mac address by ourself, we
can simply reuse ether_crc and shift only the result according to our
needs.
The code was tested against the previous implementation by verifying both
implementations against each other in userspace for
16200000000 different
mac addresses, changing the vendor bits of the mac address first.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 04:18:51 +0000 (05:18 +0100)]
staging/slicoss: Fix buffer possible overflow in slic_card_locate
smatch complains about a possible buffer overflow
slicoss.c:3651 slic_card_locate() error: buffer overflow
'physcard->adapter' 4 <= 4
If the for loop is not exited prematurely i++ is executed after the last
iteration and thus i can be 4, which is out of bounds for
physcard->adapter.
-> Add check for this condition and simplify the if statement by
inverting the condition.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 04:18:50 +0000 (05:18 +0100)]
staging/slicoss: Fix operation may be undefined warning
gcc complains about an undefined operation:
slicoss.c:1417:19: warning: operation on 'rspq->pageindex' may be
undefined [-Wsequence-point]
The intended operation was (probably) to retrieve the pageindex + 1 and let
it wrap around if it reaches the num_pages.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 04:18:49 +0000 (05:18 +0100)]
staging/slicoss: Remove always true if statement
skbtype is assigned once to NORMAL_ETHFRAME and then checked if it is
NORMAL_ETHFRAME -> remove the checks.
This also gets rid of the (false positive) smatch warning:
slicoss.c:2829 slic_xmit_start() error: potential NULL dereference
'hcmd'.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 04:13:50 +0000 (05:13 +0100)]
staging/slicoss: Check pointer before dereferencing
Smatch complains that the variable adapter is dereferenced before it is
checked:
slicoss.c:906 slic_timer_load_check() warn: variable dereferenced before
check 'adapter' (see line 904)
-> move the assignment after the check.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andres More [Tue, 26 Feb 2013 01:32:55 +0000 (20:32 -0500)]
staging: vt6656: removed no longer useful ttype.h file
Removed includes and added linux/types.h instead when needed.
Signed-off-by: Andres More <more.andres@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andres More [Tue, 26 Feb 2013 01:32:54 +0000 (20:32 -0500)]
staging: vt6656: removed custom pointer definitions
No checkpatch findings were resolved.
sed -i 's/\bULONG_PTR\b/u32/g' drivers/staging/vt6656/*.[ch]
sed -i 's/\bDWORD_PTR\b/u32/g' drivers/staging/vt6656/*.[ch]
Signed-off-by: Andres More <more.andres@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andres More [Tue, 26 Feb 2013 01:32:53 +0000 (20:32 -0500)]
staging: vt6656: replaced custom DWORD definition with u32
Checkpatch findings were not resolved.
sed -i 's/\bDWORD\b/u32/g' drivers/staging/vt6656/*.[ch]
sed -i 's/\bPDWORD\b/u32 */g' drivers/staging/vt6656/*.[ch]
Signed-off-by: Andres More <more.andres@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andres More [Tue, 26 Feb 2013 01:32:52 +0000 (20:32 -0500)]
staging: vt6656: replaced custom WORD definition with u16
Checkpatch findings were not resolved.
sed -i 's/\bWORD\b/u16/g' drivers/staging/vt6656/*.[ch]
sed -i 's/\bPWORD\b/u16 */g' drivers/staging/vt6656/*.[ch]
Signed-off-by: Andres More <more.andres@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andres More [Tue, 26 Feb 2013 01:32:51 +0000 (20:32 -0500)]
staging: vt6656: replaced custom BYTE definition with u8
Checkpatch findings were not resolved, only direct replacement.
sed -i 's/\bBYTE\b/u8/g' drivers/staging/vt6656/*.[ch]
sed -i 's/\bPBYTE\b/u8 */g' drivers/staging/vt6656/*.[ch]
Signed-off-by: Andres More <more.andres@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kevin McKinney [Thu, 21 Feb 2013 04:25:30 +0000 (23:25 -0500)]
Staging: bcm: Fix spelling error in PHSModule.c
This patch fixes a spelling error in PHSModule.c
Signed-off-by: Kevin McKinney <klmckinney1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kevin McKinney [Thu, 21 Feb 2013 04:25:29 +0000 (23:25 -0500)]
Staging: bcm: Properly format comments in PHSModule.c
This patch properly formats comments, and removes
them as needed in PHSModule.c.
Signed-off-by: Kevin McKinney <klmckinney1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kevin McKinney [Thu, 21 Feb 2013 04:25:28 +0000 (23:25 -0500)]
Staging: bcm: Properly format braces in PHSModule.c
This patch formats braces in PHSModule.c as reported
by checkpatch.pl.
Signed-off-by: Kevin McKinney <klmckinney1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kevin McKinney [Thu, 21 Feb 2013 04:25:27 +0000 (23:25 -0500)]
Staging: bcm: Fix all white space issues in PHSModule.c
This patch fixes all white space issues in
PHSModule.c as reported by checkpatch.pl.
Signed-off-by: Kevin McKinney <klmckinney1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chen Gang [Sun, 17 Feb 2013 03:53:15 +0000 (11:53 +0800)]
staging: sep: using strlcpy instead of strncpy
set '\0' at tail for NUL terminated string, or TP_printk may cause issue.
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mihnea Dobrescu-Balaur [Sun, 10 Mar 2013 12:48:27 +0000 (14:48 +0200)]
staging: bcm: don't cast kzalloc() return value
Signed-off-by: Mihnea Dobrescu-Balaur <mihneadb@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dan Carpenter [Fri, 1 Mar 2013 20:28:06 +0000 (23:28 +0300)]
Staging: bcm: potential forever loop verifying firmware
There is an ioctl() to write data to the firmware. After the data
is written, it reads the databack from the firmware and compares
against what the user wanted to write and prints an error message
if it doesn't match.
The problem is that verify process has a forever loop if the
firmware size is not a multiple of 4. I've fixed it by replacing
the bcm compare function with memcmp().
I have chopped out some debugging code in the process.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Xi Wang [Wed, 6 Mar 2013 21:32:25 +0000 (16:32 -0500)]
Staging: bcm: avoid use-after-free in bcm_char_ioctl()
Free pBulkBuffer (pvBuffer) after pBulkBuffer->Register.
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 12:07:28 +0000 (13:07 +0100)]
staging/sep: Check pointers before dereferencing (fix smatch warning)
smatch complains about two dereferenced before check issues:
sep_main.c:2898 sep_free_dma_tables_and_dcb() warn: variable dereferenced before check
'dma_ctx' (see line 2885)
sep_main.c:2898 sep_free_dma_tables_and_dcb() warn: variable dereferenced before check
'*dma_ctx' (see line 2885)
-> Move the checks to the top, but keep the semantics.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Huewe [Tue, 19 Feb 2013 12:07:27 +0000 (13:07 +0100)]
staging/sep: Fix smatch false positive about potential NULL dereference in sep_main.c
Smatch complains about a potential NULL pointer dereference:
sep_main.c:2312 sep_construct_dma_tables_from_lli() error: potential
NULL dereference 'info_out_entry_ptr'.
info_out_entry_ptr is initialized with NULL and if info_in_entry_ptr is
not NULL it gets derefenced.
However info_out_entry_ptr is only NULL in the first iteration of the
while loop and in this case info_in_entry_ptr is also NULL (as indicated
by the comment /* If info entry is null - this is the first table built */
-> this is a false positive.
Nevertheless we add a check for info_out_entry_ptr to silence this
warning and make it more robust in regard to code changes.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Thu, 7 Mar 2013 18:50:47 +0000 (13:50 -0500)]
staging: zcache/debug: compiler failure on PPC64 and revert commit.
On PPC64 we get this:
In file included from drivers/staging/zcache/debug.c:2:
drivers/staging/zcache/debug.h: In function 'dec_zcache_obj_count':
drivers/staging/zcache/debug.h:16: error: implicit declaration of function 'BUG_ON'
This simple patch adds the appropiate header file to finish
the compile and reverts
"staging: zcache: disable ZCACHE_DEBUG due to build error"
(
5db5a20a50cfd078c78b13a988f237cca81aedc5)
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Serban Constantinescu [Tue, 5 Mar 2013 15:27:38 +0000 (15:27 +0000)]
staging: android: ashmem: Add support for 32bit ashmem calls in a 64bit kernel
Android's shared memory subsystem, Ashmem, does not support calls from a
32bit userspace in a 64 bit kernel. This patch adds support for syscalls
coming from a 32bit userspace in a 64bit kernel.
The patch has been successfully tested on ARMv8 AEM(64bit
platform model) and Versatile Express A9(32bit platform).
v2: Fix missing compat.h include.
Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
Acked-by: Arve Hjønnevåg <arve@android.com>
Acked-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stephen Rothwell [Wed, 6 Mar 2013 00:31:06 +0000 (11:31 +1100)]
staging: zcache: disable ZCACHE_DEBUG due to build error
In file included from drivers/staging/zcache/debug.c:2:0:
drivers/staging/zcache/debug.h: In function 'dec_zcache_obj_count':
drivers/staging/zcache/debug.h:16:2: error: implicit declaration of function 'BUG_ON' [-Werror=implicit-function-declaration]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:20 +0000 (13:18 -0500)]
zcache/debug: Coalesce all debug under CONFIG_ZCACHE_DEBUG
and also define this extra attribute in the Kconfig entry.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:19 +0000 (13:18 -0500)]
zcache: Module license is defined twice.
The other (same license) is at the end of the file.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:18 +0000 (13:18 -0500)]
zcache: Move the last of the debugfs counters out
We now have in zcache-main only the counters that are
are not debugfs related.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:17 +0000 (13:18 -0500)]
zcache/debug: Use an array to initialize/use debugfs attributes.
It makes it neater and also allows us to piggyback on that
in the zcache_dump function.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:16 +0000 (13:18 -0500)]
zcache: Move debugfs code out of zcache-main.c file.
Note that at this point there is no CONFIG_ZCACHE_DEBUG
option in the Kconfig. So in effect all of the counters
are nop until that option gets re-introduced in:
zcache/debug: Coalesce all debug under CONFIG_ZCACHE_DEBUG
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
[v1: Fixed conflicts due to rebase]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:15 +0000 (13:18 -0500)]
zcache: Make the debug code use pr_debug
as if you are debugging this driver you would be using 'debug'
on the command line anyhow - and this would dump the debug
data on the proper loglevel.
While at it also remove the unconditional #define ZCACHE_DEBUG.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:14 +0000 (13:18 -0500)]
zcache: The last of the atomic reads has now an accessory function.
And now we can move the code ([inc|dec]_zcache_[*]) to their own file
with a header to make them nops or feed in debugfs.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:13 +0000 (13:18 -0500)]
zcache: Provide accessory functions for counter decrease.
This way we can have all wrapped with these functions and
can disable/enable this with CONFIG_DEBUG_FS.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
[v2: Rebase on top of staging/zcache: Fix/improve zcache writeback code, tie to a config option]
[v3: Rebase on top of zcache: Fix compile warnings due to usage of debugfs_create_size_t]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:12 +0000 (13:18 -0500)]
zcache: Provide accessory functions for counter increase
This is the first step in moving the debugfs code out of the
main file in-to another file. And also allow the code to run
without CONFIG_DEBUG_FS defined.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
[v2: Rebase on top staging/zcache: Fix/improve zcache writeback code, tie to a config option]
[v3: Rebase on top of zcache: Fix compile warnings due to usage of debugfs_create_size_t]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Rzeszutek Wilk [Mon, 4 Mar 2013 18:18:11 +0000 (13:18 -0500)]
zcache: s/int/bool/ on the various options.
There are so many, but this allows us to at least have them
right in as bool.
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
[v1: Rebase on ramster->zcache move]
[v2: Rebase on staging/zcache: Fix/improve zcache writeback code, tie to a config option]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Charndeep Grewal [Wed, 27 Feb 2013 06:07:38 +0000 (22:07 -0800)]
staging: android: logger: enforce GID and CAP check on log flush
Restrict log flushing to those in the logs group, or
anyone with CAP_SYSLOG.
Cc: Android Kernel Team <kernel-team@android.com>
Cc: Charndeep Grewal <csgrewa@tycho.ncsc.mil>
Signed-off-by: Charndeep Grewal <csgrewa@tycho.ncsc.mil>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nick Kralevich [Wed, 27 Feb 2013 06:07:37 +0000 (22:07 -0800)]
staging: android: logger: Allow a UID to read it's own log entries
Modify the kernel logger to record the UID associated with
the log entries. Always allow the same UID which generated a
log message to read the log message.
Allow anyone in the logs group, or anyone with CAP_SYSLOG, to
read all log entries.
In addition, allow the client to upgrade log formats, so they
can get additional information from the kernel.
Cc: Android Kernel Team <kernel-team@android.com>
Cc: Nick Kralevich <nnk@google.com>
Signed-off-by: Nick Kralevich <nnk@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arve Hjønnevåg [Wed, 27 Feb 2013 06:07:36 +0000 (22:07 -0800)]
staging: android: lowmemorykiller: Change default debug_level to 1
The select...to kill messages are not very useful when not debugging
the lowmemorykiller itself. After the change to check TIF_MEMDIE
instead of using a task notifer this message can also get very
noisy.
Cc: Android Kernel Team <kernel-team@android.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arve Hjønnevåg [Wed, 27 Feb 2013 06:07:35 +0000 (22:07 -0800)]
staging: android: lowmemorykiller: Don't count reserved free memory
The amount of reserved memory varies between devices. Subtract it
here to reduce the amount of devices specific tuning needed for the
minfree values.
Cc: Android Kernel Team <kernel-team@android.com>
Cc: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Shankar Brahadeeswaran [Wed, 20 Feb 2013 18:11:26 +0000 (23:41 +0530)]
staging: android: ashmem: get_name,set_name not to hold ashmem_mutex
Problem:
There exists a path in ashmem driver that could lead to acquistion
of mm->mmap_sem, ashmem_mutex in reverse order. This could lead
to deadlock in the system.
For Example, assume that mmap is called on a ashmem region
in the context of a thread say T1.
sys_mmap_pgoff (1. acquires mm->mmap_sem)
|
--> mmap_region
|
----> ashmem_mmap (2. acquires asmem_mutex)
Now if there is a context switch after 1 and before 2,
and if another thread T2 (that shares the mm struct) invokes an
ioctl say ASHMEM_GET_NAME, this can lead to the following path
ashmem_ioctl
|
-->get_name (3. acquires ashmem_mutex)
|
---> copy_to_user (4. acquires the mm->mmap_sem)
Note that the copy_to_user could lead to a valid fault if no
physical page is allocated yet for the user address passed.
Now T1 has mmap_sem and is waiting for ashmem_mutex.
and T2 has the ashmem_mutex and is waiting for mmap_sem
Thus leading to deadlock.
Solution:
Do not call copy_to_user or copy_from_user while holding the
ahsmem_mutex. Instead copy this to a local buffer that lives
in the stack while holding this lock. This will maintain data
integrity as well never reverse the lock order.
Testing:
Created a unit test case to reproduce the problem.
Used the same to test this fix on kernel version 3.4.0
Ported the same patch to 3.8
Signed-off-by: Shankar Brahadeeswaran <shankoo77@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jamie Gennis [Fri, 1 Mar 2013 00:43:26 +0000 (16:43 -0800)]
staging: sync: Fix timeout = 0 wait behavior
Fix wait behavior on timeout == 0 case
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Jamie Gennis <jgennis@google.com>
[jstultz: Added commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:25 +0000 (16:43 -0800)]
staging: sync: Don't log wait timeouts when timeout = 0
If the timeout is zero, don't trip the timeout debugging
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Added commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ørjan Eide [Fri, 1 Mar 2013 00:43:24 +0000 (16:43 -0800)]
staging: sync: Fix race condition between merge and signal
The copied sync_pt was activated immediately. If the sync_pt was
signaled before the entire merge was completed, the new fence's pt_list
could be iterated over while it is still in the process of being
created.
Moving the the sync_pt_activate call for all new sync_pts to after both
the sync_fence_copy_pts and the sync_fence_merge_pts calls ensure that
the pt_list is complete and immutable before it can be reached from the
timeline's active list.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:23 +0000 (16:43 -0800)]
staging: sync: Add tracepoint support
Add support for tracepoints
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Whitespace changes, add commit message, move to staging]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:22 +0000 (16:43 -0800)]
staging: sw_sync: Convert to use new value_str debug ops
Switch from print_obj/print_pt to the new
timeline_value_str and pt_value_str ops.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Add commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:21 +0000 (16:43 -0800)]
staging: sync: Refactor sync debug printing
Move driver callbacks to fill strings instead of using seq_files. This
will allow those values to be used in a future tracepoint patch.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:20 +0000 (16:43 -0800)]
staging: sync: Use proper barriers when waiting indefinitely
The previous fix only addressed waiting with a timeout.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:19 +0000 (16:43 -0800)]
staging: sync: Update new fence status with sync_fence_signal_pt
If a fence's pt is signaled before sync_fence_create is called, the fence
will never transition into the signaled state. This also address a tiny
race if a merged fence's pt after sync_fence_get_status checks it's status
and before fence->status is updated.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:18 +0000 (16:43 -0800)]
staging: sync: Protect unlocked access to fence status
Fence status is checked outside of locks in both sync_fence_wait and
sync_fence_poll. This patch adds propper barrier protection in these
cases to avoid seeing stale status.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:17 +0000 (16:43 -0800)]
staging: sync: Dump sync state on fence errors
When we get a bad status, dump sync state
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Added commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:16 +0000 (16:43 -0800)]
staging: sync: Improve timeout dump messages
Improve the output of the timeout dumps, including
the fence pointer.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Added commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:15 +0000 (16:43 -0800)]
staging: sync: Dump sync state to console on timeout
If we hit a timeout, dump sync state to console
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Add commit message, whitespace fixups]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:14 +0000 (16:43 -0800)]
staging: sync: Change wait timeout to mirror poll semantics
Change wait timeout to act like poll
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Added commit message, squished typo-fix]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rebecca Schultz Zavin [Fri, 1 Mar 2013 00:43:13 +0000 (16:43 -0800)]
staging: sw_sync: Fix error paths
Check the return value of get_unused_fd to make sure a valid
file descriptor is returned.
Make sure to call put_unused_fd even if an error occurs before
the fd can be used.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rebecca Schultz Zavin [Fri, 1 Mar 2013 00:43:12 +0000 (16:43 -0800)]
staging: sync: Fix error paths
Check the return value of get_unused_fd to make sure a valid
file descriptor is returned.
Make sure to call put_unused_fd even if an error occurs before
the fd can be used.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:11 +0000 (16:43 -0800)]
staging: sync: Add reference counting to timelines
If a timeline is destroyed while fences still hold pts on it, the reworked
fence release handler can cause the timeline to be freed before all it's points
are freed.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Squished in compiler warning fix]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:10 +0000 (16:43 -0800)]
staging: sync: Add internal refcounting to fences
If a fence is released while a timeline that one of it's pts is on is being
signaled, it is possible for that fence to be deleted before it is signaled.
This patch adds a refcount for internal references such as signaled pt
processing.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:09 +0000 (16:43 -0800)]
staging: sync: Optimize fence merges
If the two fences being merged contain sync_pts from the same timeline,
those two pts will be collapsed into a single pt representing the latter
of the two.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Whitespace fixes]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:08 +0000 (16:43 -0800)]
staging: sync: Reorder sync_fence_release
Previously fence's pts were freed before the were the fence was removed from the
global fence list. This led to a race with the debugfs support where it would
iterate over sync_pts that had been freed.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:07 +0000 (16:43 -0800)]
staging: sw_sync: Export sw_sync API
Needed to let modules link against sw_sync.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:06 +0000 (16:43 -0800)]
staging: sync: Export sync API symbols
This is needed to allow modules to link against the sync subsystem
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:05 +0000 (16:43 -0800)]
staging: sync: Allow async waits to be canceled
In order to allow drivers to cleanly handled teardown we need to allow them
to cancel pending async waits. To do this cleanly, we move allocation of
sync_fence_waiter to the driver calling sync_async_wait().
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:04 +0000 (16:43 -0800)]
staging: sync: Add poll support
Support poll on sync fence
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Add commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:03 +0000 (16:43 -0800)]
staging: sw_sync: Add fill_driver_data support
Add fill_driver_data support to export fence data to ioctl
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Add commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:02 +0000 (16:43 -0800)]
staging: sync: Add ioctl to get fence data
Add ioctl to get fence data
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Commit message tweaks]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:01 +0000 (16:43 -0800)]
staging: sw_sync: Add debug support
Add debugfs support hooks.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Add commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:43:00 +0000 (16:43 -0800)]
staging: sync: Add debugfs support
Add support for debugfs
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Add commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:42:59 +0000 (16:42 -0800)]
staging: sync: Add timestamps to sync_pts
Add ktime timestamps to sync_pt structure and
update them when signaled
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Added commit message]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:42:58 +0000 (16:42 -0800)]
staging: sw_sync: Add cpu based sync driver
Adds a base sync driver that uses the cpu for serialization.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Add commit message, whitespace fixes and move to
staging directory]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Gilling [Fri, 1 Mar 2013 00:42:57 +0000 (16:42 -0800)]
staging: sync: Add synchronization framework
Sync is a framework for synchronization between multiple
drivers. Sync implementations can take advantage of hardware
synchronization built into devices like GPUs.
Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Cc: Erik Gilling <konkers@android.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robclark@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Cc: Android Kernel Team <kernel-team@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
[jstultz: Added commit message, moved to staging, squished minor fix in]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Sun, 3 Mar 2013 23:11:05 +0000 (15:11 -0800)]
Linux 3.9-rc1
Linus Torvalds [Sun, 3 Mar 2013 22:24:59 +0000 (14:24 -0800)]
Merge tag 'disintegrate-fbdev-
20121220' of git://git.infradead.org/users/dhowells/linux-headers
Pull fbdev UAPI disintegration from David Howells:
"You'll be glad to here that the end is nigh for the UAPI patches.
Only the fbdev/framebuffer piece remains now that the SCSI stuff has
gone in.
Here are the UAPI disintegration bits for the fbdev drivers. It
appears that Florian hasn't had time to deal with my patch, but back
in December he did say he didn't mind if I pushed it forward."
Yay. No more uapi movement. And hopefully no more big header file
cleanups coming up either, it just tends to be very painful.
* tag 'disintegrate-fbdev-
20121220' of git://git.infradead.org/users/dhowells/linux-headers:
UAPI: (Scripted) Disintegrate include/video
Linus Torvalds [Sun, 3 Mar 2013 22:22:53 +0000 (14:22 -0800)]
Merge tag 'stable/for-linus-3.9-rc1-tag' of git://git./linux/kernel/git/konrad/xen
Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
- Update the Xen ACPI memory and CPU hotplug locking mechanism.
- Fix PAT issues wherein various applications would not start
- Fix handling of multiple MSI as AHCI now does it.
- Fix ARM compile failures.
* tag 'stable/for-linus-3.9-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xenbus: fix compile failure on ARM with Xen enabled
xen/pci: We don't do multiple MSI's.
xen/pat: Disable PAT using pat_enabled value.
xen/acpi: xen cpu hotplug minor updates
xen/acpi: xen memory hotplug minor updates
Linus Torvalds [Sun, 3 Mar 2013 21:23:02 +0000 (13:23 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull more VFS bits from Al Viro:
"Unfortunately, it looks like xattr series will have to wait until the
next cycle ;-/
This pile contains 9p cleanups and fixes (races in v9fs_fid_add()
etc), fixup for nommu breakage in shmem.c, several cleanups and a bit
more file_inode() work"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
constify path_get/path_put and fs_struct.c stuff
fix nommu breakage in shmem.c
cache the value of file_inode() in struct file
9p: if v9fs_fid_lookup() gets to asking server, it'd better have hashed dentry
9p: make sure ->lookup() adds fid to the right dentry
9p: untangle ->lookup() a bit
9p: double iput() in ->lookup() if d_materialise_unique() fails
9p: v9fs_fid_add() can't fail now
v9fs: get rid of v9fs_dentry
9p: turn fid->dlist into hlist
9p: don't bother with private lock in ->d_fsdata; dentry->d_lock will do just fine
more file_inode() open-coded instances
selinux: opened file can't have NULL or negative ->f_path.dentry
(In the meantime, the hlist traversal macros have changed, so this
required a semantic conflict fixup for the newly hlistified fid->dlist)
Linus Torvalds [Sun, 3 Mar 2013 21:13:20 +0000 (13:13 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixup from Chris Mason:
"Geert and James both sent this one in, sorry guys"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs/raid56: Add missing #include <linux/vmalloc.h>
Linus Torvalds [Sun, 3 Mar 2013 20:58:43 +0000 (12:58 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull second set of s390 patches from Martin Schwidefsky:
"The main part of this merge are Heikos uaccess patches. Together with
commit
09884964335e ("mm: do not grow the stack vma just because of an
overrun on preceding vma") the user string access is hopefully fixed
for good.
In addition some bug fixes and two cleanup patches."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/module: fix compile warning
qdio: remove unused parameters
s390/uaccess: fix kernel ds access for page table walk
s390/uaccess: fix strncpy_from_user string length check
input: disable i8042 PC Keyboard controller for s390
s390/dis: Fix invalid array size
s390/uaccess: remove pointless access_ok() checks
s390/uaccess: fix strncpy_from_user/strnlen_user zero maxlen case
s390/uaccess: shorten strncpy_from_user/strnlen_user
s390/dasd: fix unresponsive device after all channel paths were lost
s390/mm: ignore change bit for vmemmap
s390/page table dumper: add support for change-recording override bit
Linus Torvalds [Sun, 3 Mar 2013 20:57:38 +0000 (12:57 -0800)]
Merge branch 'fixes-for-3.9-latest' of git://git./linux/kernel/git/deller/parisc-linux
Pull second round of PARISC updates from Helge Deller:
"The most important fix in this branch is the switch of io_setup,
io_getevents and io_submit syscalls to use the available compat
syscalls when running 32bit userspace on 64bit kernel. Other than
that it's mostly removal of compile warnings."
* 'fixes-for-3.9-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: fix redefinition of SET_PERSONALITY
parisc: do not install modules when installing kernel
parisc: fix compile warnings triggered by atomic_sub(sizeof(),v)
parisc: check return value of down_interruptible() in hp_sdc_rtc.c
parisc: avoid unitialized variable warning in pa_memcpy()
parisc: remove unused variable 'compat_val'
parisc: switch to compat_functions of io_setup, io_getevents and io_submit
parisc: select ARCH_WANT_FRAME_POINTERS
Linus Torvalds [Sun, 3 Mar 2013 20:06:09 +0000 (12:06 -0800)]
Merge tag 'metag-v3.9-rc1-v4' of git://git./linux/kernel/git/jhogan/metag
Pull new ImgTec Meta architecture from James Hogan:
"This adds core architecture support for Imagination's Meta processor
cores, followed by some later miscellaneous arch/metag cleanups and
fixes which I kept separate to ease review:
- Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture
- A few fixes all over, particularly for symbol prefixes
- A few privilege protection fixes
- Several cleanups (setup.c includes, split out a lot of
metag_ksyms.c)
- Fix some missing exports
- Convert hugetlb to use vm_unmapped_area()
- Copy device tree to non-init memory
- Provide dma_get_sgtable()"
* tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: (61 commits)
metag: Provide dma_get_sgtable()
metag: prom.h: remove declaration of metag_dt_memblock_reserve()
metag: copy devicetree to non-init memory
metag: cleanup metag_ksyms.c includes
metag: move mm/init.c exports out of metag_ksyms.c
metag: move usercopy.c exports out of metag_ksyms.c
metag: move setup.c exports out of metag_ksyms.c
metag: move kick.c exports out of metag_ksyms.c
metag: move traps.c exports out of metag_ksyms.c
metag: move irq enable out of irqflags.h on SMP
genksyms: fix metag symbol prefix on crc symbols
metag: hugetlb: convert to vm_unmapped_area()
metag: export clear_page and copy_page
metag: export metag_code_cache_flush_all
metag: protect more non-MMU memory regions
metag: make TXPRIVEXT bits explicit
metag: kernel/setup.c: sort includes
perf: Enable building perf tools for Meta
metag: add boot time LNKGET/LNKSET check
metag: add __init to metag_cache_probe()
...
Linus Torvalds [Sun, 3 Mar 2013 19:54:39 +0000 (11:54 -0800)]
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull late ARM updates from Russell King:
"Here is the late set of ARM updates for this merge window; in here is:
- The ARM parts of the broadcast timer support, core parts merged
through tglx's tree. This was left over from the previous merge to
allow the dependency on tglx's tree to be resolved.
- A fix to the VFP code which shows up on Raspberry Pi's, as well as
fixing the fallout from a previous commit in this area.
- A number of smaller fixes scattered throughout the ARM tree"
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm:
ARM: Fix broken commit
0cc41e4a21d43 corrupting kernel messages
ARM: fix scheduling while atomic warning in alignment handling code
ARM: VFP: fix emulation of second VFP instruction
ARM: 7656/1: uImage: Error out on build of multiplatform without LOADADDR
ARM: 7640/1: memory: tegra_ahb_enable_smmu() depends on TEGRA_IOMMU_SMMU
ARM: 7654/1: Preserve L_PTE_VALID in pte_modify()
ARM: 7653/2: do not scale loops_per_jiffy when using a constant delay clock
ARM: 7651/1: remove unused smp_timer_broadcast #define
Linus Torvalds [Sun, 3 Mar 2013 18:25:47 +0000 (10:25 -0800)]
Merge tag 'char-misc-3.9-rc1' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc patch from Greg Kroah-Hartman:
"Here is one remaining patch for 3.9-rc1. It is for the hyper-v
drivers, and had to wait until some other patches went in through the
x86 tree."
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* tag 'char-misc-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Drivers: hv: vmbus: Use the new infrastructure for delivering VMBUS interrupts
Linus Torvalds [Sun, 3 Mar 2013 18:24:57 +0000 (10:24 -0800)]
Merge tag 'usb-3.9-rc1' of git://git./linux/kernel/git/gregkh/usb
Pull USB patch revert from Greg Kroah-Hartman:
"Here is one remaining USB patch for 3.9-rc1, it reverts a 3.8 patch
that has caused a lot of regressions for some VIA EHCI controllers."
* tag 'usb-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: EHCI: revert "remove ASS/PSS polling timeout"
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