diff options
| author | Harry Wentland <harry.wentland@amd.com> | 2015-11-25 15:42:09 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-02-10 16:08:40 -0500 |
| commit | 9ddf940f5d73ca4a0ee1e8f65993f7f080f1ed20 (patch) | |
| tree | 7ddd276e4fd691f99f2f115d77c58e025c7f4868 /drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | |
| parent | e86f9ceee19ec028ae79a09fe1eaabf315d67969 (diff) | |
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index e23843f4d877..56f771e6dfa5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -727,6 +727,12 @@ int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe, /* Get associated drm_crtc: */ 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: */ return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error, |