[PATCH 3/3] virtio_bt: fixup potential cpu stall when free unused bufs

Xianting Tian
2023-06-09T13:19:00Z

Cpu stall issue may happen if device is configured with multi queues
and large queue depth, so fix it.

Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
---
drivers/bluetooth/virtio_bt.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c
index c570c45d1480..2ac70b560c46 100644
--- a/drivers/bluetooth/virtio_bt.c
+++ b/drivers/bluetooth/virtio_bt.c
@@ -79,6 +79,7 @@ static int virtbt_close_vdev(struct virtio_bluetooth *vbt)

while ((skb = virtqueue_detach_unused_buf(vq)))
kfree_skb(skb);
+ cond_resched();
}

return 0;
--
2.17.1