linux/drivers/media/usb/uvc
Kees Cook 3f649ab728 treewide: Remove uninitialized_var() usage
Using uninitialized_var() is dangerous as it papers over real bugs[1]
(or can in the future), and suppresses unrelated compiler warnings
(e.g. "unused variable"). If the compiler thinks it is uninitialized,
either simply initialize the variable or make compiler changes.

In preparation for removing[2] the[3] macro[4], remove all remaining
needless uses with the following script:

git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \
	xargs perl -pi -e \
		's/\buninitialized_var\(([^\)]+)\)/\1/g;
		 s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;'

drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid
pathological white-space.

No outstanding warnings were found building allmodconfig with GCC 9.3.0
for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64,
alpha, and m68k.

[1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/
[2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/
[3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/
[4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/

Reviewed-by: Leon Romanovsky <leonro@mellanox.com> # drivers/infiniband and mlx4/mlx5
Acked-by: Jason Gunthorpe <jgg@mellanox.com> # IB
Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless drivers
Reviewed-by: Chao Yu <yuchao0@huawei.com> # erofs
Signed-off-by: Kees Cook <keescook@chromium.org>
2020-07-16 12:35:15 -07:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile media: uvcvideo: Add a metadata device node 2018-01-04 06:41:47 -05:00
uvc_ctrl.c media: uvcvideo: Fix access to uninitialized fields on probe error 2019-06-11 12:22:21 -04:00
uvc_debugfs.c media: uvcvideo: drop error check of debugfs_create_dir() 2019-11-14 11:16:34 +08:00
uvc_driver.c media: media/usb: rename VFL_TYPE_GRABBER to _VIDEO 2020-02-24 16:53:16 +01:00
uvc_entity.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
uvc_isight.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
uvc_metadata.c media: uvcvideo: Fix a typo in UVC_METATADA_BUF_SIZE 2019-10-16 16:34:34 -03:00
uvc_queue.c media: uvcvideo: Fix a typo in UVC_METATADA_BUF_SIZE 2019-10-16 16:34:34 -03:00
uvc_status.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
uvc_v4l2.c media: drivers/media: don't set pix->priv = 0 2019-07-23 08:48:33 -04:00
uvc_video.c treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
uvcvideo.h media: uvcvideo: Add a quirk to force GEO GC6500 Camera bits-per-pixel value 2020-01-23 13:16:13 +01:00