diff options
| author | sunliming <sunliming@kylinos.cn> | 2022-06-23 09:27:07 +0800 |
|---|---|---|
| committer | Abhinav Kumar <quic_abhinavk@quicinc.com> | 2022-06-23 10:34:36 -0700 |
| commit | eb174bd875ae504cdc1b5b209da288fffb1e5128 (patch) | |
| tree | f5ccf2410948aadeff45a16459696b0526e081df | |
| parent | 0769d0a7ae3c26c0f2210578f83b3d1b30391601 (diff) | |
drm/msm/dpu: Fix variable dereferenced before check
Fixes the following smatch warning:
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c:261
dpu_encoder_phys_wb_atomic_check() warn: variable dereferenced before check 'conn_state'
Fixes: d7d0e73f7de3 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback")
Signed-off-by: sunliming <sunliming@kylinos.cn>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/490850/
Link: https://lore.kernel.org/r/20220623012707.453972-1-sunliming@kylinos.cn
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 10 |
1 files changed, 5 insertions, 5 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 59da348ff339..0ec809ab06e7 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 @@ -252,11 +252,6 @@ static int dpu_encoder_phys_wb_atomic_check( DPU_DEBUG("[atomic_check:%d, \"%s\",%d,%d]\n", phys_enc->wb_idx, mode->name, mode->hdisplay, mode->vdisplay); - if (!conn_state->writeback_job || !conn_state->writeback_job->fb) - return 0; - - fb = conn_state->writeback_job->fb; - if (!conn_state || !conn_state->connector) { DPU_ERROR("invalid connector state\n"); return -EINVAL; @@ -267,6 +262,11 @@ static int dpu_encoder_phys_wb_atomic_check( return -EINVAL; } + if (!conn_state->writeback_job || !conn_state->writeback_job->fb) + return 0; + + fb = conn_state->writeback_job->fb; + DPU_DEBUG("[fb_id:%u][fb:%u,%u]\n", fb->base.id, fb->width, fb->height); |