From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Mon, 2 Dec 2013 17:00:45 +0000 (+0200)
Subject: drm/i915: Avoid div-by-zero in clock calculation funcs
X-Git-Tag: v3.14-rc1~47^2~44^2~58
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ed5ca77ed7505cd389003a6d35ca1b7365429d71;p=pandora-kernel.git

drm/i915: Avoid div-by-zero in clock calculation funcs

Check that the N and P dividers don't cause a divide by zero.

This shouldn't happen under normal circumstances, but can
happen eg. under simulation.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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