7a23512595
[Why] The call to drm_crtc_vblank_get can fail if vblank is disabled and we try to increment the reference. Since drm_crtc_vblank_get internally drops the reference when it fails it means the subsequent drm_crtc_vblank_put(...) when closing the file drops a zero reference. This was found via igt@kms_plane@pixel-format-pipe-A-planes. [How] Check the return code and return it on failure. We wouldn't have been able to enable CRC reading anyway since vblank wasn't enabled. Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: David Francis <David.Francis@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> |
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