[Intel-gfx] [PATCH] drm/i915: support address only i2c-over-aux transactions

[Daniel Vetter]

On Tue, Apr 8, 2014 at 8:58 AM, Jani Nikula <jani.nikula at intel.com> wrote:
> Before the conversion to dp aux helpers there was a switch case [1] that
> ended up in msg_bytes = 3 for address only start/stop messages
> (MODE_I2C_START or MODE_I2C_STOP bit set [2]). With Alex's series in,
> but without my patch, we'd send the four byte header but with 0 - 1 =
> 0xff in txbuf[3]. I'm pretty sure breakage would follow.
>
> Thus I'd like to have my patch in before the dp aux helpers use
> msg->size == 0 for address only messages.
>
> Daniel, convinced yet?

Indeed, I've been blinding. Acked for merging through radeon trees
together with the other patches as a fixup for 3.15.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch