Commit 58547d7d authored Feb 05, 2020 by Chia-I Wu Committed by Gerd Hoffmann Feb 06, 2020

drm/virtio: fix a wait_event condition



outcnt may be greater than 1 since commit e1218b8c ("drm/virtio:
Use vmalloc for command buffer allocations.").

Fixes: e1218b8c ("drm/virtio: Use vmalloc for command buffer allocations.")
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Cc: David Riley <davidriley@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20200205181955.202485-2-olvaffe@gmail.com


Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

parent e46e31cf

drivers/gpu/drm/virtio/virtgpu_vq.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -391,7 +391,8 @@ again:
		*/
		if (vq->num_free < 2 + outcnt) {
		spin_unlock(&vgdev->ctrlq.qlock);
		wait_event(vgdev->ctrlq.ack_queue, vq->num_free >= 3);
		wait_event(vgdev->ctrlq.ack_queue,
		vq->num_free >= 2 + outcnt);
		goto again;
		}

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