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Commit 77a209cd authored by Jeykumar Sankaran's avatar Jeykumar Sankaran Committed by Rob Clark
Browse files

drm/msm/disp/dpu: fix early dereference of physical encoder 



This change validates the physical encoder before it
is dereferenced.

Signed-off-by: default avatarJeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
parent bec2dd69

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c

+3 −1
Original line number Diff line number Diff line
@@ -2444,6 +2444,8 @@ int dpu_encoder_wait_for_event(struct drm_encoder *drm_enc, 


	for (i = 0; i < dpu_enc->num_phys_encs; i++) {

		struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i];

		if (!phys)

			continue;



		switch (event) {

		case MSM_ENC_COMMIT_DONE:
@@ -2461,7 +2463,7 @@ int dpu_encoder_wait_for_event(struct drm_encoder *drm_enc, 
			return -EINVAL;

		};



		if (phys && fn_wait) {

		if (fn_wait) {

			DPU_ATRACE_BEGIN("wait_for_completion_event");

			ret = fn_wait(phys);

			DPU_ATRACE_END("wait_for_completion_event");