From: Keith Packard <keithp@keithp.com>
Date: Mon, 31 Oct 2011 18:30:10 +0000 (-0700)
Subject: drm/i915: Use mode_config.mutex in ironlake_panel_vdd_work
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=627f7675f0f530ea555d76543dc4e469d70a1532;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

drm/i915: Use mode_config.mutex in ironlake_panel_vdd_work

Use of the struct_mutex is not correct for locking in mode setting paths.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index fc1a0832af4f..7259034b33d1 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -971,9 +971,9 @@ static void ironlake_panel_vdd_work(struct work_struct *__work)
 						 struct intel_dp, panel_vdd_work);
 	struct drm_device *dev = intel_dp->base.base.dev;
 
-	mutex_lock(&dev->struct_mutex);
+	mutex_lock(&dev->mode_config.mutex);
 	ironlake_panel_vdd_off_sync(intel_dp);
-	mutex_unlock(&dev->struct_mutex);
+	mutex_unlock(&dev->mode_config.mutex);
 }
 
 static void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync)