From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Tue, 24 Sep 2013 18:26:21 +0000 (+0300)
Subject: drm/i915: Don't underflow bestppm
X-Git-Tag: v3.13-rc1~76^2~68^2~126
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c686122c638838ce7113aeb22e4f1c50446de6eb;p=pandora-kernel.git

drm/i915: Don't underflow bestppm

We do 'bestppm - 10' in vlv_find_best_dpll() but never check whether
that might underflow. Add such a check.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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