[Intel-gfx] [PATCH v2] drm/i915: restore backlight precision when converting from opregion

[Chris Wilson]

On Sun, May 04, 2014 at 03:31:01PM +0800, Aaron Lu wrote:
> On 05/04/2014 03:22 PM, Chris Wilson wrote:
> > Also this still has the same rounding error as before.
> 
> I didn't get this, care to explain?

The calculation you use, truncates, rather than say round to nearest,
would is the same discrepancy in your changelog.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre