From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 22 Feb 2019 06:34:04 +0000 (+0300)
Subject: drm/nouveau/dmem: Fix a NULL vs IS_ERR() check
X-Git-Tag: v5.4-rc1~1356^2~4^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=18ec3c129bcad0a481ee7faf8ce5ad92d6537722;p=platform%2Fkernel%2Flinux-rpi.git

drm/nouveau/dmem: Fix a NULL vs IS_ERR() check

The hmm_devmem_add() function doesn't return NULL, it returns error
pointers.

Fixes: 5be73b690875 ("drm/nouveau/dmem: device memory helpers for SVM")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c
index 58b4cb38..b1df42f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dmem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c
@@ -621,7 +621,7 @@ nouveau_dmem_init(struct nouveau_drm *drm)
 	 */
 	drm->dmem->devmem = hmm_devmem_add(&nouveau_dmem_devmem_ops,
 					   device, size);
-	if (drm->dmem->devmem == NULL) {
+	if (IS_ERR(drm->dmem->devmem)) {
 		kfree(drm->dmem);
 		drm->dmem = NULL;
 		return;