From 8caad14e722477807e9324fe0e85dd10151fb134 Mon Sep 17 00:00:00 2001 From: Haowen Bai Date: Mon, 30 May 2022 10:19:55 +0800 Subject: [PATCH] drm/msm/dpu: Fix pointer dereferenced before checking The phys_enc->wb_idx is dereferencing before null checking, so move it after checking. Signed-off-by: Haowen Bai Reviewed-by: Dmitry Baryshkov Fixes: d7d0e73f7de33 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for Reviewed-by: Abhinav Kumar Patchwork: https://patchwork.freedesktop.org/patch/487606/ Link: https://lore.kernel.org/r/1653877196-23114-1-git-send-email-baihaowen@meizu.com Signed-off-by: Abhinav Kumar --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c index 4829d1ce0cf8..59da348ff339 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c @@ -574,11 +574,11 @@ static void dpu_encoder_phys_wb_disable(struct dpu_encoder_phys *phys_enc) */ static void dpu_encoder_phys_wb_destroy(struct dpu_encoder_phys *phys_enc) { - DPU_DEBUG("[wb:%d]\n", phys_enc->wb_idx - WB_0); - if (!phys_enc) return; + DPU_DEBUG("[wb:%d]\n", phys_enc->wb_idx - WB_0); + kfree(phys_enc); }