drm/radeon/kms: Return to userspace on ERESTARTSYS

radeon_object.h wasn't converted to ERESTARTSYS change. No
each time we got an ERESTARTSYS we return to userspace (ie
we were interrupted by a signal and we let the userspace
reschedule the ioctl).
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/radeon_object.h

@@ -59,19 +59,17 @@ static inline unsigned radeon_mem_type_to_domain(u32 mem_type)
  *
  * Returns:
  * -EBUSY: buffer is busy and @no_wait is true
- * -ERESTART: A wait for the buffer to become unreserved was interrupted by
+ * -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
  * a signal. Release all buffer reservations and return to user-space.
  */
 static inline int radeon_bo_reserve(struct radeon_bo *bo, bool no_wait)
 {
 	int r;
 
-retry:
 	r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0);
 	if (unlikely(r != 0)) {
-		if (r == -ERESTART)
-			goto retry;
-		dev_err(bo->rdev->dev, "%p reserve failed\n", bo);
+		if (r != -ERESTARTSYS)
+			dev_err(bo->rdev->dev, "%p reserve failed\n", bo);
 		return r;
 	}
 	return 0;
@@ -125,12 +123,10 @@ static inline int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type,
 {
 	int r;
 
-retry:
 	r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0);
 	if (unlikely(r != 0)) {
-		if (r == -ERESTART)
-			goto retry;
-		dev_err(bo->rdev->dev, "%p reserve failed for wait\n", bo);
+		if (r != -ERESTARTSYS)
+			dev_err(bo->rdev->dev, "%p reserve failed for wait\n", bo);
 		return r;
 	}
 	spin_lock(&bo->tbo.lock);
@@ -140,8 +136,6 @@ retry:
 		r = ttm_bo_wait(&bo->tbo, true, true, no_wait);
 	spin_unlock(&bo->tbo.lock);
 	ttm_bo_unreserve(&bo->tbo);
-	if (unlikely(r == -ERESTART))
-		goto retry;
 	return r;
 }