[Intel-gfx] [PATCH 09/10] drm/i915: Use fb->pitches[0] in cursor code

[Chris Wilson]

On Tue, Mar 07, 2017 at 05:27:08PM +0200, ville.syrjala at linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> The cursor code currently ignores fb->pitches[0] (except when creating
> the fb itself), and just uses the cursor_width*4 as the stride. Let's
> make sure fb->pitches[0] actually matches what we expect it to be.
> 
> We can also relax the stride vs. cursor width relationship on 845/865
> since the stride is programmed separately. The only constraint is that
> width*cpp doesn't exceed the stride, and that's already been checked
> by the core since it makes sure the entire plane fits within the fb.
> 
> We can also drop the bo size check as that's already checked when
> we create the fb. That is the fb is guaranteed to fit within the bo.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre