android_kernel_motorola_sm6375/drivers/gpu
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Nikita Zhandarovich 262db3ff58 drm/radeon: fix possible division-by-zero errors
[ Upstream commit 1becc57cd1a905e2aa0e1eca60d2a37744525c4a ]

Function rv740_get_decoded_reference_divider() may return 0 due to
unpredictable reference divider value calculated in
radeon_atom_get_clock_dividers(). This will lead to
division-by-zero error once that value is used as a divider
in calculating 'clk_s'.
While unlikely, this issue should nonetheless be prevented so add a
sanity check for such cases by testing 'decoded_ref' value against 0.

Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.

v2: minor coding style fixes (Alex)
In practice this should actually happen as the vbios should be
properly populated.

Fixes: 66229b2005 ("drm/radeon/kms: add dpm support for rv7xx (v4)")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-07-27 08:37:15 +02:00
..
drm drm/radeon: fix possible division-by-zero errors 2023-07-27 08:37:15 +02:00
host1x gpu: host1x: Don't skip assigning syncpoints to channels 2023-03-11 16:43:46 +01:00
ipu-v3 gpu: ipu-v3: common: Add of_node_put() for reference returned by of_graph_get_port_by_id() 2023-03-11 16:43:44 +01:00
vga
Makefile