From ca721b79377360a891a7d47ed091a79442d5cc7e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Tue, 17 Jun 2014 19:12:03 +0900 Subject: [PATCH] Revert "drm/radeon: remove drm_vblank_get|put from pflip handling" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit 75f36d861957cb05b7889af24c8cd4a789398304. drm_vblank_get() is necessary to ensure the DRM vblank counter value is up to date in drm_send_vblank_event(). Seems to fix weston hangs waiting for page flips to complete. Signed-off-by: Michel Dänzer Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/radeon_display.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 4db26420f38a..ef3b4d12294c 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -358,6 +358,7 @@ void radeon_crtc_handle_flip(struct radeon_device *rdev, int crtc_id) spin_unlock_irqrestore(&rdev->ddev->event_lock, flags); + drm_vblank_put(rdev->ddev, radeon_crtc->crtc_id); radeon_fence_unref(&work->fence); radeon_irq_kms_pflip_irq_get(rdev, work->crtc_id); queue_work(radeon_crtc->flip_queue, &work->unpin_work); @@ -460,6 +461,12 @@ static void radeon_flip_work_func(struct work_struct *__work) base &= ~7; } + r = drm_vblank_get(crtc->dev, radeon_crtc->crtc_id); + if (r) { + DRM_ERROR("failed to get vblank before flip\n"); + goto pflip_cleanup; + } + /* We borrow the event spin lock for protecting flip_work */ spin_lock_irqsave(&crtc->dev->event_lock, flags); @@ -474,6 +481,16 @@ static void radeon_flip_work_func(struct work_struct *__work) return; +pflip_cleanup: + if (unlikely(radeon_bo_reserve(work->new_rbo, false) != 0)) { + DRM_ERROR("failed to reserve new rbo in error path\n"); + goto cleanup; + } + if (unlikely(radeon_bo_unpin(work->new_rbo) != 0)) { + DRM_ERROR("failed to unpin new rbo in error path\n"); + } + radeon_bo_unreserve(work->new_rbo); + cleanup: drm_gem_object_unreference_unlocked(&work->old_rbo->gem_base); radeon_fence_unref(&work->fence);