drm/radeon: check return value of radeon_ring_lock()

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[ Upstream commit 71225e1c93 ]

In the unlikely event of radeon_ring_lock() failing, its errno return
value should be processed. This patch checks said return value and
prints a debug message in case of an error.

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

Fixes: 48c0c902e2 ("drm/radeon/kms: add support for CP setup on SI")
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>

...

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Nikita Zhandarovich 2023-08-08 11:04:16 -07:00 • committed by Greg Kroah-Hartman

parent cadb98cc3d

commit 7d76889a45

1 changed files with 4 additions and 0 deletions

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drivers/gpu/drm/radeon/si.c

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