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drm/komeda: check for error-valued pointer

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[ Upstream commit b880018edd3a577e50366338194dee9b899947e0 ]

komeda_pipeline_get_state() may return an error-valued pointer, thus
check the pointer for negative or null value before dereferencing.

Fixes: 502932a03fce ("drm/komeda: Add the initial scaler support for CORE")
Signed-off-by: Amjad Ouled-Ameur <amjad.ouled-ameur@arm.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240610102056.40406-1-amjad.ouled-ameur@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Amjad Ouled-Ameur 2024-06-10 11:20:56 +01:00 • committed by Ksawlii
parent a04fd7acfb
commit f77863ef05
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
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@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component *c,
u32 avail_scalers; u32 avail_scalers;
pipe_st = komeda_pipeline_get_state(c->pipeline, state); pipe_st = komeda_pipeline_get_state(c->pipeline, state);
if (!pipe_st) if (IS_ERR_OR_NULL(pipe_st))
return NULL; return NULL;
avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^ avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^