Re: [PATCH 2/2] i2c: virtio: fix completion handling
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2021-10-19 08:22:17
Also in:
linux-i2c, lkml
On 19-10-21, 09:46, Vincent Whitchurch wrote:
quoted hunk ↗ jump to hunk
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))
complete(&vi->completion);
}
Since we already know which is the last one, we can also check at this
point if buffers for all other requests are received or not.
--
viresh
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