From: Kamil Dudka <kdudka@redhat.com>
Date: Wed, 15 Jul 2015 15:18:15 +0000 (+0200)
Subject: drm/nouveau: hold mutex when calling nouveau_abi16_fini()
X-Git-Tag: v4.9.8~3825^2~3^2~16
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ac8c79304280da6ef05c348a9da03ab04898b994;p=platform%2Fkernel%2Flinux-rpi3.git

drm/nouveau: hold mutex when calling nouveau_abi16_fini()

This was the only access to cli->abi16 without holding the mutex.

Signed-off-by: Kamil Dudka <kdudka@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 649024d..01c78a4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -865,8 +865,10 @@ nouveau_drm_preclose(struct drm_device *dev, struct drm_file *fpriv)
 
 	pm_runtime_get_sync(dev->dev);
 
+	mutex_lock(&cli->mutex);
 	if (cli->abi16)
 		nouveau_abi16_fini(cli->abi16);
+	mutex_unlock(&cli->mutex);
 
 	mutex_lock(&drm->client.mutex);
 	list_del(&cli->head);