From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 8 May 2018 12:26:50 +0300
Subject: drm/xen-front: checking for NULL instead of IS_ERR
Git-commit: e30ca4bcf0d9ad2c6f5716d6098b935f0d584c76
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
drm_dev_alloc() returns error pointers, it never returns NULL.
Fixes: c575b7eeb89f ("drm/xen-front: Add support for Xen PV display frontend")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508092650.GA661@mwanda
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/xen/xen_drm_front.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/xen/xen_drm_front.c
+++ b/drivers/gpu/drm/xen/xen_drm_front.c
@@ -543,8 +543,8 @@ static int xen_drm_drv_init(struct xen_d
front_info->drm_info = drm_info;
drm_dev = drm_dev_alloc(&xen_drm_driver, dev);
- if (!drm_dev) {
- ret = -ENOMEM;
+ if (IS_ERR(drm_dev)) {
+ ret = PTR_ERR(drm_dev);
goto fail;
}