From 0a5f6e9d60e71e4b6dbeabd97bc887d6b2b0f0c8 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 25 Aug 2014 14:52:15 -0400
Subject: [PATCH] drm/radeon: handle broken disabled rb mask gracefully
 (6xx/7xx) (v2)

This is a port of cedb655a3a7764c3fd946077944383c9e0e68dd4
to older asics.  Fixes a possible divide by 0 if the harvest
register is invalid.

v2: drop some additional harvest munging.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
---
Reading git-format-patch failed