lkml.org 
[lkml]   [2021]   [Jul]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v11] i2c: virtio: add a virtio i2c frontend driver
On 02-07-21, 11:36, Jie Deng wrote:
> OK. Let's add the following two lines to make sure that msg_buf is only
> sent when the msgs len is not zero. And backend judges whether it is
> a zero-length request by checking the number of elements received.
>
>  + if (msgs[i].len) {
>            reqs[i].buf = i2c_get_dma_safe_msg_buf(&msgs[i], 1);
>            if (!reqs[i].buf)
>                    break;
>
>           sg_init_one(&msg_buf, reqs[i].buf, msgs[i].len);
>
>           if (msgs[i].flags & I2C_M_RD)
>                   sgs[outcnt + incnt++] = &msg_buf;
>           else
>                   sgs[outcnt++] = &msg_buf;
> +}

Perfect. Thanks.

--
viresh

\
 
 \ /
  Last update: 2021-07-02 06:57    [W:0.399 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site