[Intel-gfx] [PATCH 2/2] Check if the bus is valid prior to discovering edid.

[Eugeni Dodonov]

On Sat, Oct 8, 2011 at 19:13, Ben Widawsky <ben at bwidawsk.net> wrote:

> I think you may as well optimistically try to get the edid_data here.
> The problem is, in the success case you add ~10 i2c clocks because you
> next call drm_get_edid. If you optimistacally try to do both you should
> receive the -ENXIO after the slaves ignore the address byte, and not
> lose time. (So win on exists case, lose a *slight* amount of CPU time in
> fail case).
>

Yep, good idea!

I was hoping about that drm_edid patch - it is much smaller, gives slightly
better results in all cases, and works with all the cards which use drm. But
until I find some non-intel cards to test it (or someone with such cards
volunteers to do such testing), I am a bit sceptical about having it merged.

-- 
Eugeni Dodonov
<http://eugeni.dodonov.net/>
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