amdgpu submits both kernel and user fences, but just need one interrupt,
disable user fence interrupt and don't effect user fence.
v2: fix merge error
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This patch introduces ARCH_HISI to enable Hisilicon SoC family in
Kconfig and defconfig.
Signed-off-by: Bintian Wang <bintian.wang@huawei.com>
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Reviewed-by: Wei Xu <xuwei5@hisilicon.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Tested-by: Tyler Baker <tyler.baker@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
Document the new Transfer Function control (and fix the documentation for
the other colorspace controls which were not quite correct).
Mention the support for 4:2:0 and more multiplanar formats.
Update the TODO list at the end.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Simplify cobalt_g/try_fmt_vid_cap by not setting the colorspace fields in
pix again (since v4l2_fill_pix_format does that already), and by using
v4l2_fill_mbus_format in cobalt_s_fmt_vid_out which allows the get_fmt
call to be dropped as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add support for the transfer function to the cobalt driver: make sure it is
passed on to/retrieved from the sub-device correctly.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Precalculate all the colorspace/transfer function combinations in order
to easily generate the correct colors.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add support for the transfer function: create a new control for it,
and support it for both capture and output sides.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Make this part of the format check.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Still preliminary, but the information is at least there.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Document the new field and defines to set the transfer function needed
to correctly decode the colors of an image.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
In the past the transfer function was implied by the colorspace. However,
it is an independent entity in its own right. Add support for explicitly
choosing the transfer function.
This change will allow us to represent linear RGB (as is used by openGL), and
it will make it easier to work with decoded video material since most codecs
store the transfer function as a separate property as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add initial dtsi file to support Hisilicon Hi6220 SoC with
support of Octal core CPUs in two clusters and each cluster
has quard Cortex-A53.
Also add dts file to support HiKey development board which
based on Hi6220 SoC.
Signed-off-by: Bintian Wang <bintian.wang@huawei.com>
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Reviewed-by: Yiping Xu <xuyiping@hisilicon.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Tested-by: Tyler Baker <tyler.baker@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
This patch adds documentation for the devicetree bindings used by the
DT files of Hisilicon hi6220 SoC mobile platform.
Signed-off-by: Bintian Wang <bintian.wang@huawei.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
Instead of using a state machine and a switch with lots of
fall-trough, use gotos and cleanup the error handling loop.
That removes those two smatch warnings:
drivers/staging/media/lirc/lirc_imon.c:933 imon_probe() warn: possible memory leak of 'context'
drivers/staging/media/lirc/lirc_imon.c:933 imon_probe() warn: possible memory leak of 'driver'
And make the error handling code more standard.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
There's a dead code on usbvision that makes it harder to read
and produces a smatch warning about bad identation.
Improve the code readability and add a FIXME to warn about
the current hack there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Smatch reports a warning:
drivers/media/usb/tm6000/tm6000-video.c:646 tm6000_prepare_isoc() error: we previously assumed 'dev->urb_buffer' could be null (see line 624)
This is not really a problem, but it actually shows that the check
if urb_buffer is NULL is being done twice: at the if and at
tm6000_alloc_urb_buffers().
We don't need to do it twice. So, remove the extra check. The code
become cleaner, and, as a collateral effect, smatch becomes happy.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Smatch currently produces two warnings:
drivers/media/pci/ivtv/ivtv-fileops.c:901 ivtv_v4l2_close() warn: suspicious bitop condition
drivers/media/pci/ivtv/ivtv-fileops.c:1026 ivtv_open() warn: suspicious bitop condition
Those are false positives, but it is not hard to get rid of them by
using a different way to evaluate the macro, splitting the logical
boolean evaluation from the bitmap one.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
As reported by smatch:
drivers/media/pci/bt8xx/dst_ca.c:323 ca_get_message() warn: this array is probably non-NULL. 'p_ca_message->msg'
drivers/media/pci/bt8xx/dst_ca.c:498 ca_send_message() warn: this array is probably non-NULL. 'p_ca_message->msg'
Those two checks are needless/useless, as the ca_msg struct is
declared as:
typedef struct ca_msg {
unsigned int index;
unsigned int type;
unsigned int length;
unsigned char msg[256];
} ca_msg_t;
So, if the p_ca_message pointer is not null, msg will also be
not null.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
As reported by smatch:
drivers/media/dvb-frontends/dib0090.c:1710 dib0090_dc_offset_calibration() warn: missing break? reassigning '*tune_state'
There's no need to change tune_state there, as the fall though code
will change it again to another state. So, simplify it by
removing the dead code.
While here, fix a typo:
Sart => Start
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Here are a couple of new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
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8utUK5Zu/Paak7u2we4pNwpKNBDV3vMrVv7Dzr5YqgW55ubd+/mD5cdEnerf+KbU
v/jm3QkH8LunJecCGO/VdP1XkNriNmYKuv1zE2JH9dvVbblAzX2PJIKOUfWvq+O+
TVd6/etn9YOnTVnsHitqGDcIhQUkSCWedl9Bu9Z2VhVc4fFxd5D7Lk6yaM45AQJ0
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LZYg6+MLYyvNSJo28i9l8QQHY4O2l/4vpNP4APfftBUgqmewPvXs575ZmpBdhKRU
6e/nQvsGoVT7whXplq5jgCw8NQrbthJWiKZ5ugeZZL5sUVa0LAPW2wfLt4s9Klvs
tv95buFT8KJRRprj1jc77RqaYR6i/tJ40QzoGh/KKZrqG46XpR7/UPp7gGPlc2Xq
sMIMkauehwiiCU7LTh8WF5p1P+4q6udsuIyJ10qFJ6cdZWOVMDdcturCcyE6xPYM
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Merge tag 'usb-serial-4.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.1-rc7
Here are a couple of new device ids.
Signed-off-by: Johan Hovold <johan@kernel.org>
Just a minor clean up of mos7840 this time.
Signed-off-by: Johan Hovold <johan@kernel.org>
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3xU/I6RrU95OMP5AJFktgB9cKD1WCnse8Q1AYXnGvUi2XkSzXt+j3t+Dj4prcn2E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Merge tag 'usb-serial-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB-serial updates for v4.2-rc1
Just a minor clean up of mos7840 this time.
Signed-off-by: Johan Hovold <johan@kernel.org>
Make sure we call the ->remove_device call-back on all
devices already initialized with ->add_device when the bus
initialization fails.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Write a message to the kernel log when a device is added or
removed from a group and add debug messages to group
allocation and release routines.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Including the function name is only useful for debugging
messages. They don't belong into other messages from the
iommu core.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Deobfuscate the 'found' logic, it can be replaced with a simple:
if (!pa_data)
return;
and 'found' can be eliminated.
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1433398729-8314-1-git-send-email-weiyang@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
There's some useless padding in the struct spi_driver definition. Remove
it since it serves no useful purpose.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Both the Samsung LD9040 and Samsung S6E8AA0 panel drivers are missing
a const qualifier for their OF match tables. This data is static and
never changes, so can be read-only.
Signed-off-by: Thierry Reding <treding@nvidia.com>
This header file declares prototypes of functions that are no longer
used. Remove this file and all references to it.
Signed-off-by: Thierry Reding <treding@nvidia.com>
If GPIOLIB=n and asm-generic/gpio.h is not used:
drivers/gpu/drm/bridge/ps8622.c: In function ‘ps8622_pre_enable’:
drivers/gpu/drm/bridge/ps8622.c:368: error: implicit declaration of function ‘gpiod_set_value’
drivers/gpu/drm/bridge/ps8622.c: In function ‘ps8622_probe’:
drivers/gpu/drm/bridge/ps8622.c:584: error: implicit declaration of function ‘devm_gpiod_get’
drivers/gpu/drm/bridge/ps8622.c:584: warning: assignment makes pointer from integer without a cast
drivers/gpu/drm/bridge/ps8622.c:590: error: implicit declaration of function ‘gpiod_direction_output’
drivers/gpu/drm/bridge/ps8622.c:596: warning: assignment makes pointer from integer without a cast
Add the missing #include <linux/gpio/consumer.h> to fix this.
Fixes: f1336e6afb ("drm/bridge: Add I2C based driver for ps8622/ps8625 bridge")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
If GPIOLIB=n and asm-generic/gpio.h is not used:
drivers/gpu/drm/bridge/ptn3460.c: In function ‘ptn3460_pre_enable’:
drivers/gpu/drm/bridge/ptn3460.c:135: error: implicit declaration of function ‘gpiod_set_value’
drivers/gpu/drm/bridge/ptn3460.c: In function ‘ptn3460_probe’:
drivers/gpu/drm/bridge/ptn3460.c:333: error: implicit declaration of function ‘devm_gpiod_get’
drivers/gpu/drm/bridge/ptn3460.c:333: warning: assignment makes pointer from integer without a cast
drivers/gpu/drm/bridge/ptn3460.c:340: error: implicit declaration of function ‘gpiod_direction_output’
drivers/gpu/drm/bridge/ptn3460.c:346: warning: assignment makes pointer from integer without a cast
Add the missing #include <linux/gpio/consumer.h> to fix this.
Fixes: af478d8823 ("drm/bridge: ptn3460: use gpiod interface")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Thierry Reding <treding@nvidia.com>
The dw_hdmi_connector_get_modes() function accidentally forgets to
return the number of modes it added, although it has this information
stored in a local variable. Let's fix that.
Without this fix, drm_helper_probe_single_connector_modes_merge_bits()
could get confused and always call drm_add_modes_noedid(). That's not
right.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Tested-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Really swap arguments #4 and #5 in stub32_clone instead of
"optimizing" it into a move.
Yes, tls_val is currently unused. Yes, on some CPUs XCHG is a
little bit more expensive than MOV. But a cycle or two on an
expensive syscall like clone() is way below noise floor, and
this optimization is simply not worth the obfuscation of logic.
[ There's also ongoing work on the clone() ABI by Josh Triplett
that will depend on this change later on. ]
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1433339930-20880-2-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The reason for copying of %r8 to %rcx is quite non-obvious.
Add a comment which explains why it is done.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1433339930-20880-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Make the 64-bit compat 32-bit syscall entry code a bit more readable:
- eliminate whitespace noise
- use consistent vertical spacing
- use consistent assembly coding style similar to entry_64.S
- fix various comments
No code changed:
arch/x86/entry/ia32entry.o:
text data bss dec hex filename
1391 0 0 1391 56f ia32entry.o.before
1391 0 0 1391 56f ia32entry.o.after
md5:
f28501dcc366e68b557313942c6496d6 ia32entry.o.before.asm
f28501dcc366e68b557313942c6496d6 ia32entry.o.after.asm
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
SYSENTER and SYSCALL 32-bit entry points differ in handling of
arg2 and arg6.
SYSENTER:
* ecx arg2
* ebp user stack
* 0(%ebp) arg6
SYSCALL:
* ebp arg2
* esp user stack
* 0(%esp) arg6
Sysenter code loads 0(%ebp) to %ebp right away.
(This destroys %ebp. It means we do not preserve it on return.
It's not causing problems since userspace VDSO code does not
depend on it, and SYSENTER insn can't be sanely used outside of
VDSO).
Syscall code loads 0(%ebp) to %r9. This allows to eliminate one
MOV insn (r9 is a register where arg6 should be for 64-bit ABI),
but on audit/ptrace code paths this requires juggling of r9 and
ebp: (1) ptrace expects arg6 to be in pt_regs->bp;
(2) r9 is callee-clobbered register and needs to be
saved/restored around calls to C functions.
This patch changes syscall code to load 0(%ebp) to %ebp, making
it more similar to sysenter code. It's a bit smaller:
text data bss dec hex filename
1407 0 0 1407 57f ia32entry.o.before
1391 0 0 1391 56f ia32entry.o
To preserve ABI compat, we restore ebp on exit.
Run-tested.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1433336169-18964-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This macro is small, has only three callsites, and one of them
is slightly different using a conditional parameter.
A few saved lines aren't worth the resulting obfuscation.
Generated machine code is identical.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1433271842-9139-2-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This macro is small, has only four callsites, and one of them is
slightly different using a conditional parameter.
A few saved lines aren't worth the resulting obfuscation.
Generated machine code is identical.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
[ Added comments. ]
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1433271842-9139-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
32-bit syscall entry points do not save the complete pt_regs struct,
they leave some fields uninitialized. However, they must be
careful to not leak uninitialized data in pt_regs->r8..r11 to
ptrace users.
CLEAR_RREGS macro is used to zero these fields out when needed.
However, in the int80 code path this zeroing is unconditional.
This patch simplifies it by storing zeroes there right away,
when pt_regs is constructed on stack.
This uses shorter instructions:
text data bss dec hex filename
1423 0 0 1423 58f ia32entry.o.before
1407 0 0 1407 57f ia32entry.o
Compile-tested.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1433266510-2938-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Smatch reports two issues:
drivers/media/platform/sh_vou.c:670 vou_adjust_output() error: buffer overflow 'vou_scale_v_num' 3 <= 4
drivers/media/platform/sh_vou.c:670 vou_adjust_output() error: buffer overflow 'vou_scale_v_den' 3 <= 4
It seems that there's actually a bug here: the same var (idx) is used
as an index for vertical and horizontal scaling arrays. However,
there are 4 elements on the h arrays, and only 3 at the v ones.
On the first loop, it may select index 4 for the horizontal array.
In this case, if the second loop fails to select an index, the
code would keep using 4 for the vertical array, with is past of
the array sizes.
The intent here seems to use index 0, if the scale is not found.
So, use a separate var for the vertical index.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
As reported by smatch:
drivers/media/dvb-frontends/drxk_hard.c:3277 dvbt_sc_command() warn: missing break? reassigning 'status'
This is basically because the error handling logic there was crappy.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
INTERRUPT_RETURN turns into a jmp instruction. There's no need
for extra indirection.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/2f2318653dbad284a59311f13f08cea71298fd7c.1433449436.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
