X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=drivers%2Fgpu%2Fdrm%2Fradeon%2Fradeon_kms.c;h=03586763ee8616ae41d17f91bc4ad6d70ac7f646;hb=c52e5698efef1d9999d744be001be62d9fcabf55;hp=8309b11e674d8506bfeb3f05530407ede4b60642;hpb=3d430bdb74140224d90dd6253d67ff71d181cf64;p=cascardo%2Flinux.git

diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 8309b11e674d..03586763ee86 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -795,6 +795,8 @@ int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
 
 	/* Get associated drm_crtc: */
 	drmcrtc = &rdev->mode_info.crtcs[crtc]->base;
+	if (!drmcrtc)
+		return -EINVAL;
 
 	/* Helper routine in DRM core does all the work: */
 	return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,