drm: Don't swallow error codes in drm_dev_alloc()
There are many reasons other than ENOMEM that drm_dev_init() can
fail. Return ERR_PTR rather than NULL to be able to distinguish
these in the caller.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20160921145919.13754-2-teg@jklm.no
diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c
index 6d4ff34..28e6471 100644
--- a/drivers/gpu/drm/arc/arcpgu_drv.c
+++ b/drivers/gpu/drm/arc/arcpgu_drv.c
@@ -198,8 +198,8 @@
int ret;
drm = drm_dev_alloc(&arcpgu_drm_driver, &pdev->dev);
- if (!drm)
- return -ENOMEM;
+ if (IS_ERR(drm))
+ return PTR_ERR(drm);
ret = arcpgu_load(drm);
if (ret)