Commit 3ded9104 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki

driver core: Avoid NULL pointer dereferences in device_is_bound()

If device_is_bound() is called on a device that's not been registered
yet, it will attepmt to dereference dev->p which is NULL, so avoid
that by checking dev->p in there against NULL.

Fixes: 6b9cb427 "device core: add device_is_bound()"
Reported-and-tested-by: default avatarGuenter Roeck <linux@roeck-us.net>
Tested-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 2d30bb0b
...@@ -234,7 +234,7 @@ late_initcall(deferred_probe_initcall); ...@@ -234,7 +234,7 @@ late_initcall(deferred_probe_initcall);
*/ */
bool device_is_bound(struct device *dev) bool device_is_bound(struct device *dev)
{ {
return klist_node_attached(&dev->p->knode_driver); return dev->p && klist_node_attached(&dev->p->knode_driver);
} }
static void driver_bound(struct device *dev) static void driver_bound(struct device *dev)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment