media: vivid: fix potential integer overflow on left shift

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There is a potential integer overflow when int 2 is left shifted
as this is evaluated using 32 bit arithmetic but is being used in
a context that expects an expression of type s64.  Fix this by
generating a mask using GENMASK to avoid a 32 bit overflow.

Addresses-Coverity: ("Unintentional integer overflow")

Fixes: 8a99e9faa1 ("media: vivid: add HDMI (dis)connect RX emulation")
Fixes: 79a792dafa ("media: vivid: add HDMI (dis)connect TX emulation")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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Colin Ian King 2019-06-27 04:05:41 -04:00 • committed by Mauro Carvalho Chehab

parent b61789f53d

commit b98fd3cb6d

1 changed files with 12 additions and 12 deletions

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drivers/media/platform/vivid/vivid-ctrls.c

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