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(parent: faf4742) | patch
drm/vc4: kms: Fix return code check
authorMaxime Ripard <maxime@cerno.tech>
Wed, 17 Nov 2021 09:45:23 +0000 (10:45 +0100)
committerMaxime Ripard <maxime@cerno.tech>
Mon, 29 Nov 2021 14:17:51 +0000 (15:17 +0100)
commit00d921d2bbd1a8090cd9e83fddb818c531fc2177
tree89f639ee57dedacc1cacc7e88d5ca6281cc7bf8etree | snapshot
parentfaf4742907ab64db23f3139037fe2e407d19e825commit | diff
drm/vc4: kms: Fix return code check

The HVS global state functions return an error pointer, but in most
cases we check if it's NULL, possibly resulting in an invalid pointer
dereference.

Fixes: 4c39a07c7800 ("drm/vc4: kms: Wait on previous FIFO users before a commit")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Tested-by: Jian-Hong Pan <jhp@endlessos.org>
Link: https://lore.kernel.org/r/20211117094527.146275-3-maxime@cerno.tech
drivers/gpu/drm/vc4/vc4_kms.c diff | blob | history
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