Commit c6bf811a authored Sep 21, 2016 by Tom Gundersen Committed by Sean Paul Sep 22, 2016

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

parent f566911a

drivers/gpu/drm/drm_drv.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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);