Thread (35 messages) 35 messages, 6 authors, 2021-11-09

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

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
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