On 10/26/2021 7:24 AM, Nathan Chancellor wrote:
Clang warns:

drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:162:6: error: variable 'commit' is 
uninitialized when used here [-Werror,-Wuninitialized]
         if (commit)
             ^~~~~~
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c:106:32: note: initialize the variable 
'commit' to silence this warning
         struct drm_crtc_commit *commit;
                                       ^
                                        = NULL
1 error generated.

The assignment and use of commit in the main body of
dpu_crtc_set_crc_source() were removed from v1 to v2 but the call to
drm_crtc_commit_put() at the end was not. Do that now so there is no
more warning.

Fixes: 78d9b458cc21 ("drm/msm/dpu: Add CRC support for DPU")
Link: https://github.com/ClangBuiltLinux/linux/issues/1493
Reported-by: "kernelci.org bot" <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Reviewed-by: Jessica Zhang <[email protected]>
---
  drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 3 ---
  1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 2523e829f485..967245b8cc02 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -103,7 +103,6 @@ static int dpu_crtc_set_crc_source(struct drm_crtc *crtc, 
const char *src_name)
  {
        enum dpu_crtc_crc_source source = dpu_crtc_parse_crc_source(src_name);
        enum dpu_crtc_crc_source current_source;
-       struct drm_crtc_commit *commit;
        struct dpu_crtc_state *crtc_state;
        struct drm_device *drm_dev = crtc->dev;
        struct dpu_crtc_mixer *m;
@@ -159,8 +158,6 @@ static int dpu_crtc_set_crc_source(struct drm_crtc *crtc, 
const char *src_name)
cleanup:
-       if (commit)
-               drm_crtc_commit_put(commit);
        drm_modeset_unlock(&crtc->mutex);
return ret;

base-commit: 00326bfa4e6363e4b0b8b019ecd2556fdda5ad1c

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