The -Warray-bounds warning in gcc-8 triggers for a newly added file:
drivers/media/spi/cxd2880-spi.c: In function 'cxd2880_write_reg':
drivers/media/spi/cxd2880-spi.c:111:3: error: 'memcpy' forming offset [133, 258] is out of the bounds [0, 132] of object 'send_data' with type 'u8[132]' {aka 'unsigned char[132]'} [-Werror=array-bounds]
The problem appears to be that we have two range checks in this function,
first comparing against BURST_WRITE_MAX (128) and then comparing against
a literal '255'. The logic checking the buffer size looks at the second
one and decides that this might be the actual maximum data length.
This is understandable behavior from the compiler, but the code is actually
safe. Since the first check is already shorter, we can remove the loop
and only leave that. To be on the safe side in case BURST_WRITE_MAX might
be increased, I'm leaving the check against U8_MAX.
Fixes: bd24fcddf6 ("media: cxd2880-spi: Add support for CXD2880 SPI interface")
Cc: Martin Sebor <msebor@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Yasunari Takiguchi <Yasunari.Takiguchi@sony.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
It's not necessary to free memory allocated with devm_kzalloc
and using kfree leads to a double free.
Fixes: 7aae6e2df1 ("[media] Add GS1662 driver, a video serializer")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Remove .owner field if calls are used which set it automatically.
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
WARNING: line over 80 characters
+ GS_HEIGHT_MAX, GS_PIXELCLOCK_MIN, GS_PIXELCLOCK_MAX,
WARNING: line over 80 characters
+ if (v4l2_match_dv_timings(timings, ®_fmt[i].format, 0, false))
WARNING: Block comments use a trailing */ on a separate line
+ * which looks like a video signal activity.*/
WARNING: else is not generally useful after a break or return
+ return gs_write_register(gs->pdev, REG_FORCE_FMT, reg_value);
+ } else {
WARNING: Block comments use a trailing */ on a separate line
+ * which looks like a video signal activity.*/
ERROR: spaces required around that '=' (ctx:VxW)
+ .enum_dv_timings= gs_enum_dv_timings,
^
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The SPI driver looked a bit lonely in the config menu, and it didn't
support the autoselect. Shift things around a bit so it looks more logical.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
