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authorDave Young <hidave.darkstar@gmail.com>2009-02-14 08:23:22 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2009-03-24 19:38:25 -0400
commitf48f3febb2cbfd0f2ecee7690835ba745c1034a4 (patch)
tree1cb3803049cde40ff3dc528a2120f915e65f0367 /fs
parente5779a583ddb9916b37cfbb916dc53ec2eaf0b9b (diff)
driver-core: do not register a driver with bus_type not registered
If the bus_type is not registerd, driver_register to that bus will cause oops. I found this bug when test built-in usb serial drivers (ie. aircable driver) with 'nousb' cmdline params. In this patch: 1. set the bus->p=NULL when bus_register failed and unregisterd. 2. if bus->p is NULL, driver_register BUG_ON will be triggered. Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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