[Intel-gfx] [PATCH] drm/i915: clear the entire sdvo infoframe buffer

[Daniel Vetter]

On Mon, Oct 22, 2012 at 04:22:30PM -0200, Rodrigo Vivi wrote:
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
> 
> On Sun, Oct 21, 2012 at 8:52 AM, Daniel Vetter <daniel.vetter at ffwll.ch>wrote:
> 
> > Like in the case of native hdmi, which is fixed already in
> >
> > commit adf00b26d18e1b3570451296e03bcb20e4798cdd
> > Author: Paulo Zanoni <paulo.r.zanoni at intel.com>
> > Date:   Tue Sep 25 13:23:34 2012 -0300
> >
> >     drm/i915: make sure we write all the DIP data bytes
> >
> > we need to clear the entire sdvo buffer to avoid upsetting the
> > display.
> >
> > Since infoframe buffer writing is now a bit more elaborate, extract it
> > into it's own function. This will be useful if we ever get around to
> > properly update the ELD for sdvo. Also #define proper names for the
> > two buffer indexes with fixed usage.
> >
> > v2: Cite the right commit above, spotted by Paulo Zanoni.
> >
> > v3: I'm too stupid to paste the right commit.
> >
> > v4: Ben Hutchings noticed that I've failed to handle an underflow in
> > my loop logic, breaking it for i >= length + 8. Since I've just lost C
> > programmer license, use his solution. Also, make the frustrated 0-base
> > buffer size a notch more clear.
> >
> > Reported-and-tested-by: Jürg Billeter <j at bitron.ch>
> > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=25732
> > Cc: stable at vger.kernel.org
> > Cc: Paulo Zanoni <przanoni at gmail.com>
> > Cc: Ben Hutchings <ben at decadent.org.uk>
> > Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

Patch merged to -fixes, thanks for the review.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch