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Subject: Re: [PATCH V5 0/2] virtio: i2c: Allow zero-length transactions
On 2021/10/12 19:23, Viresh Kumar wrote:
Hi, Arnd suggested (over IRC) to split this into two patches for better readability and so here is a resend. The eventual specification hasn't changed at all. V4->V5: - Split into two patches. V3->V4: - Add a new mandatory feature flag. V2->V3: - Add conformance clauses that require that the flag is consistent with the buffer. V1->V2: - Name the buffer-less request as zero-length request. ------ I did try to follow the discussion you guys had during V4, where we added support for multiple buffers for the same request, which I think is unnecessary now, after introduction of the VIRTIO_I2C_FLAGS_FAIL_NEXT flag. https://lists.oasis-open.org/archives/virtio-comment/202011/msg00005.html And so starting this discussion again, because we need to support stuff like: i2cdetect -q <i2c-bus-number>, which issues a zero-length SMBus Quick command. Viresh Kumar (2): virtio: i2c: No need to have separate read-write buffers virtio: i2c: Allow zero-length transactions
LGTM. Thanks Viresh. Reviewed-by: Jie Deng <jie.deng@intel.com>
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