From c6bf811a0b55ab224fb2c75345641b4bb599475c Mon Sep 17 00:00:00 2001
From: Tom Gundersen <teg@jklm.no>
Date: Wed, 21 Sep 2016 16:59:18 +0200
Subject: [PATCH] drm: Distinguish no name from ENOMEM in set_unique()
If passing name == NULL to drm_drv_set_unique() we now get -ENOMEM
as kstrdup() returns NULL. Instead check for this explicitly and
return -EINVAL if no name is provided.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20160921145919.13754-1-teg@jklm.no
---
drivers/gpu/drm/drm_drv.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index f2f6429ab04f6..99e67517b5c53 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -338,6 +338,9 @@ void drm_minor_release(struct drm_minor *minor)
static int drm_dev_set_unique(struct drm_device *dev, const char *name)
{
+ if (!name)
+ return -EINVAL;
+
kfree(dev->unique);
dev->unique = kstrdup(name, GFP_KERNEL);
--
GitLab