[Intel-gfx] [PATCH] drm/i915: Fix RC6VIDS encode/devoce

[Daniel Vetter]

On Fri, Feb 01, 2013 at 04:41:14PM -0800, Ben Widawsky wrote:
> The RC6 VIDS has a linear ramp starting at 250mv, which means any values
> below 250 are invalid. The old buggy macros tried to adjust for this to
> be more flexible, but there is no need. As Dan pointed out the ENCODE
> only ever has one value. The only invalid value for decode is an input
> of 0 which means something is really wonky, and the cases where DECODE
> are used either don't matter (debug values), or would be implicitly
> correct (the check for less than 450).
> 
> This patch makes simpler, easier to read macros which are actually
> correct. Maybe this patch can actually fix some bugs now.
> 
> Thanks to Dan for catching this. /me hides
> 
> Cc: stable at kernel.org
> Reported-by: Dan Carpenter <dan.carpenter at oracle.com>
> Signed-off-by: Ben Widawsky <ben at bwidawsk.net>

Queued for -next, thanks for the patch.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch