Re: [PATCH v11] i2c: virtio: add a virtio i2c frontend driver
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2021-07-02 04:56:43
Also in:
linux-i2c, lkml
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 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization