]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
drm/arm: fix unintentional integer overflow on left shift
authorColin Ian King <colin.king@canonical.com>
Thu, 18 Jun 2020 10:04:00 +0000 (11:04 +0100)
committerLiviu Dudau <Liviu.Dudau@arm.com>
Fri, 19 Jun 2020 12:40:06 +0000 (13:40 +0100)
commit5f368ddea6fec519bdb93b5368f6a844b6ea27a6
treee46c852b14f9c11d693135beffd9e7d599689ebd
parent79ce058032c391b12af928b1e30abf92482a270f
drm/arm: fix unintentional integer overflow on left shift

Shifting the integer value 1 is evaluated using 32-bit arithmetic
and then used in an expression that expects a long value leads to
a potential integer overflow. Fix this by using the BIT macro to
perform the shift to avoid the overflow.

Addresses-Coverity: ("Unintentional integer overflow")
Fixes: ad49f8602fe8 ("drm/arm: Add support for Mali Display Processors")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200618100400.11464-1-colin.king@canonical.com
drivers/gpu/drm/arm/malidp_planes.c