5.15-stable review patch. If anyone has any objections, please let me know.
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From: Amjad Ouled-Ameur amjad.ouled-ameur@arm.com
[ 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.o... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c index 88b58153f9d66..c956fda918beb 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c @@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component *c, u32 avail_scalers;
pipe_st = komeda_pipeline_get_state(c->pipeline, state); - if (!pipe_st) + if (IS_ERR_OR_NULL(pipe_st)) return NULL;
avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^