From: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Thu, 2 Jul 2015 22:25:11 +0000 (-0300)
Subject: drm/i915: intel_frontbuffer_flip_prepare() doesn't need struct_mutex
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5abeca4ec5d425538b73af58076990823a744e2a;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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

So release the lock earlier.

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 93d3bdf242a9..e1f9ae69a13a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11475,9 +11475,9 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
 			  to_intel_plane(primary)->frontbuffer_bit);
 
 	intel_fbc_disable(dev);
+	mutex_unlock(&dev->struct_mutex);
 	intel_frontbuffer_flip_prepare(dev,
 				       to_intel_plane(primary)->frontbuffer_bit);
-	mutex_unlock(&dev->struct_mutex);
 
 	trace_i915_flip_request(intel_crtc->plane, obj);