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From e9b8250407ae73faa7ac543f7f260b4b2f34ebd8 Mon Sep 17 00:00:00 2001
From: Jim Bride <jim.bride@linux.intel.com>
Date: Mon, 6 Nov 2017 13:38:57 -0800
Subject: [PATCH] drm/i915/edp: Only use the alternate fixed mode if it's asked
for
In commit dc911f5bd8aa ("drm/i915/edp: Allow alternate fixed mode for
eDP if available."), the patch allows for the use of an alternate fixed
mode if it is available, but the patch was not ensuring that the only
time the alternate mode is used is when it is specifically requested.
This patch adds an additional comparison to intel_edp_compare_alt_mode
to ensure that we only use the alternate mode if it is directly
requested.
Fixes: dc911f5bd8aac ("Allow alternate fixed mode for eDP if available.")
Cc: David Weinehall <david.weinehall@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jim Bride <jim.bride@linux.intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index d27c014..8164c59 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1621,7 +1621,8 @@ static bool intel_edp_compare_alt_mode(struct drm_display_mode *m1,
m1->vdisplay == m2->vdisplay &&
m1->vsync_start == m2->vsync_start &&
m1->vsync_end == m2->vsync_end &&
- m1->vtotal == m2->vtotal);
+ m1->vtotal == m2->vtotal &&
+ m1->vrefresh == m2->vrefresh);
return bres;
}
--
2.7.4
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