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

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

drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c

+6 −0
Original line number Diff line number Diff line
@@ -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,