The ctx->hw is dereferencing before null checking, so move it after checking.
Signed-off-by: Haowen Bai baihaowen@meizu.com --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c index bcccce292937..e59680cdd0ce 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c @@ -155,11 +155,13 @@ static void dpu_hw_wb_roi(struct dpu_hw_wb *ctx, struct dpu_hw_wb_cfg *wb) static void dpu_hw_wb_setup_qos_lut(struct dpu_hw_wb *ctx, struct dpu_hw_wb_qos_cfg *cfg) { - struct dpu_hw_blk_reg_map *c = &ctx->hw; + struct dpu_hw_blk_reg_map *c; u32 qos_ctrl = 0;
if (!ctx || !cfg) return; + + c = &ctx->hw;
DPU_REG_WRITE(c, WB_DANGER_LUT, cfg->danger_lut); DPU_REG_WRITE(c, WB_SAFE_LUT, cfg->safe_lut);