Re: [PATCH 2/2] i2c: virtio: fix completion handling
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2021-10-20 09:17:29
Also in:
lkml, virtualization
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2021-10-20 09:17:29
Also in:
lkml, virtualization
On 20-10-21, 16:54, Jie Deng wrote:
On 2021/10/19 16:22, Viresh Kumar wrote:quoted
On 19-10-21, 09:46, Vincent Whitchurch wrote:quoted
static void virtio_i2c_msg_done(struct virtqueue *vq) { - struct virtio_i2c *vi = vq->vdev->priv; + struct virtio_i2c_req *req; + unsigned int len; - complete(&vi->completion); + while ((req = virtqueue_get_buf(vq, &len))) + complete(&req->completion);Instead of adding a completion for each request and using only the last one, maybe we can do this instead here: while ((req = virtqueue_get_buf(vq, &len))) { if (req->out_hdr.flags == cpu_to_le32(VIRTIO_I2C_FLAGS_FAIL_NEXT))Is this for the last one check ? For the last one, this bit should be cleared, right ?
Oops, you are right. This should be `!=` instead. Thanks. -- viresh