Messages in this thread | | | Date | Fri, 2 Jul 2021 10:26:33 +0530 | From | Viresh Kumar <> | Subject | Re: [PATCH v11] i2c: virtio: add a virtio i2c frontend driver |
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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
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