From 48783069350a2963e97696a3c3ed0a40cbe35210 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Mon, 8 Jul 2013 11:35:06 -0400
Subject: [PATCH] drm/radeon/dpm: add checks against vblank time

If the vblank time is too short to adjust mclk,
assume multiple displays (no mclk adjustments).

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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