Commit 9ddf940f authored by Harry Wentland's avatar Harry Wentland Committed by Alex Deucher

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

Signed-off-by: default avatarHarry Wentland <harry.wentland@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e86f9cee
...@@ -727,6 +727,12 @@ int amdgpu_get_vblank_timestamp_kms(struct drm_device *dev, unsigned int pipe, ...@@ -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,
......
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