drm/virtio: Wake up all waiters when capset response comes in.

If multiple callers occur simultaneously, wake them all up.

Signed-off-by: David Riley <davidriley@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190605234423.11348-2-davidriley@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 2c5eeccb88c0e2a9db990f645ef6ad9f0ce819d4..2bac1cbc5ec8448e043f890c2d3fde4fa5c9c07d 100644 (file)
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -598,7 +598,7 @@ static void virtio_gpu_cmd_capset_cb(struct virtio_gpu_device *vgdev,
                }
        }
        spin_unlock(&vgdev->display_info_lock);
-       wake_up(&vgdev->resp_wq);
+       wake_up_all(&vgdev->resp_wq);
 }
 
 static int virtio_get_edid_block(void *data, u8 *buf,