From: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Thu, 2 Jul 2015 22:25:12 +0000 (-0300)
Subject: drm/i915: intel_unregister_dsm_handler() doesn't need struct_mutex
X-Git-Tag: v4.3-rc1~75^2~36^2~86
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b5e4b84d9f12b093780a4e90e51604c3b4706cde;p=karo-tx-linux.git

drm/i915: intel_unregister_dsm_handler() doesn't need struct_mutex

So don't grab the lock before calling the function.

Reviewed-by: Chris wilson <chris@chris-wilson.co.uk>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e1f9ae69a13a..8ddeb294f1eb 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -15603,12 +15603,10 @@ void intel_modeset_cleanup(struct drm_device *dev)
 	 */
 	drm_kms_helper_poll_fini(dev);
 
-	mutex_lock(&dev->struct_mutex);
-
 	intel_unregister_dsm_handler();
 
+	mutex_lock(&dev->struct_mutex);
 	intel_fbc_disable(dev);
-
 	mutex_unlock(&dev->struct_mutex);
 
 	/* flush any delayed tasks or pending work */