[Intel-gfx] [PATCH] drm/edid: Dump valid EDIDs too

Ville Syrjälä ville.syrjala at linux.intel.com
Thu Mar 29 16:14:05 UTC 2018

On Thu, Mar 29, 2018 at 05:01:13PM +0100, Chris Wilson wrote:
> Quoting Ville Syrjala (2018-03-29 16:50:23)
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > 
> > Having the EDID available is often very beneficial for bug analysis,
> > even when the EDID itself is valid and not the direct cause of the
> > bug. So let's dump the EDID to dmesg even when it's valid. This
> > should also give us a better historical record of EDIDs for later
> > analysis.
> Isn't this a bit frequent for a largely unchanging blob?

Perhaps. Though ideally we shouldn't go re-reading it all the time.
But I guess that's wisful thinking.

Not sure we have a good place where we could memcmp() the new EDID
against the old one and only print if it changed.

Ville Syrjälä
Intel OTC

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