driver core: Avoid NULL pointer dereferences in device_is_bound()
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 12 Jan 2016 00:51:44 +0000 (01:51 +0100)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 12 Jan 2016 00:51:44 +0000 (01:51 +0100)
commit3ded91041a762423bd49bb932ae2e36b65c6ae4b
treebc44c929b80788b34ee3b37d4c991ec54145fc8d
parent2d30bb0b3889adf09b342722b2ce596c0763bc93
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: 6b9cb42752da "device core: add device_is_bound()"
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/base/dd.c