From: Michel Dänzer <michel.daenzer@xxxxxxx>
Otherwise the DRM core and userspace will be confused about which BO the
CRTC is scanning out.
Signed-off-by: Michel Dänzer <michel.daenzer@xxxxxxx>
---
drivers/gpu/drm/radeon/radeon_display.c | 24 +++++++++---------------
1 file changed, 9 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 82ae9e3..9da4933 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -347,20 +347,22 @@ static void radeon_flip_work_func(struct work_struct *__work)
int r;
down_read(&rdev->exclusive_lock);
- while (work->fence) {
+ if (work->fence) {
r = radeon_fence_wait(work->fence, false);
if (r == -EDEADLK) {
up_read(&rdev->exclusive_lock);
r = radeon_gpu_reset(rdev);
down_read(&rdev->exclusive_lock);
}
+ if (r)
+ DRM_ERROR("failed to wait on page flip fence (%d)!\n", r);
- if (r) {
- DRM_ERROR("failed to wait on page flip fence (%d)!\n",
- r);
- goto cleanup;
- } else
- radeon_fence_unref(&work->fence);
+ /* We continue with the page flip even if we failed to wait on
+ * the fence, otherwise the DRM core and userspace will be
+ * confused about which BO the CRTC is scanning out
+ */
+
+ radeon_fence_unref(&work->fence);
}
/* We borrow the event spin lock for protecting flip_status */
@@ -368,14 +370,6 @@ static void radeon_flip_work_func(struct work_struct *__work)
radeon_crtc->flip_status = RADEON_FLIP_READY;
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
up_read(&rdev->exclusive_lock);
-
- return;
-
-cleanup:
- drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base);
- radeon_fence_unref(&work->fence);
- kfree(work);
- up_read(&rdev->exclusive_lock);
}
static int radeon_crtc_page_flip(struct drm_crtc *crtc,
--
2.0.0
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