From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu, 9 Jul 2015 21:32:45 +0000 (+0200)
Subject: drm/nouveau: Don't take dev->struct_mutex in ttm_fini
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c325f88d7d8a58fbfaaa5bb9c1d39f2cb4fba827;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

drm/nouveau: Don't take dev->struct_mutex in ttm_fini

This is only called in driver load/unload paths, no need to grab any
locks at all. Also, ttm takes care of itself anyway.

Cc: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index 18f449715788..1f8ec0e2156c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -424,10 +424,8 @@ nouveau_ttm_init(struct nouveau_drm *drm)
 void
 nouveau_ttm_fini(struct nouveau_drm *drm)
 {
-	mutex_lock(&drm->dev->struct_mutex);
 	ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 	ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_TT);
-	mutex_unlock(&drm->dev->struct_mutex);
 
 	ttm_bo_device_release(&drm->ttm.bdev);