From: Alexandre Courbot <acourbot@nvidia.com>
Date: Fri, 20 Mar 2015 10:41:04 +0000 (+0900)
Subject: drm/nouveau/platform: release IOMMU's mm upon exit
X-Git-Tag: firefly_0821_release~176^2~1915^2~6^2~18
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=25eb3a924f8589b5ad80e5d50d743befca8a46de;p=firefly-linux-kernel-4.4.55.git

drm/nouveau/platform: release IOMMU's mm upon exit

nvkm_mm_fini() was not called when exiting the driver, resulting in a
memory leak. Fix this.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_platform.c b/drivers/gpu/drm/nouveau/nouveau_platform.c
index 3691982452a9..f83aa12ee5c6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_platform.c
+++ b/drivers/gpu/drm/nouveau/nouveau_platform.c
@@ -152,6 +152,7 @@ static void nouveau_platform_remove_iommu(struct device *dev,
 					  struct nouveau_platform_gpu *gpu)
 {
 	if (gpu->iommu.domain) {
+		nvkm_mm_fini(&gpu->iommu._mm);
 		iommu_detach_device(gpu->iommu.domain, dev);
 		iommu_domain_free(gpu->iommu.domain);
 	}