hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

drm/amdgpu: Don't crash system if we can't get crtc 

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland 2015-11-25 15:42:09 -05:00 committed by Alex Deucher
parent e86f9ceee1
commit 9ddf940f5d
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
View File

@ -727,6 +727,12 @@ int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe,
/* Get associated drm_crtc: */ /* Get associated drm_crtc: */
crtc = &adev->mode_info.crtcs[pipe]->base; crtc = &adev->mode_info.crtcs[pipe]->base;
if (!crtc) {
/* This can occur on driver load if some component fails to
* initialize completely and driver is unloaded */
DRM_ERROR("Uninitialized crtc %d\n", pipe);
return -EINVAL;
}
/* Helper routine in DRM core does all the work: */ /* Helper routine in DRM core does all the work: */
return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error, return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error,