mfd: Only unregister platform devices allocated by the mfd core
authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Fri, 9 Nov 2012 16:15:28 +0000 (16:15 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 17 Jan 2013 16:50:45 +0000 (08:50 -0800)
commitaf713fb8e79809aa46f16de4f209245c39b9d7eb
treed8f50b4c95fe49d6eab68d166a91b189b2b2c68f
parent4bc4d7ec50d4811610197ee7707559022250724a
mfd: Only unregister platform devices allocated by the mfd core

commit b9fbb62eb61452d728c39b2e5020739c575aac53 upstream.

mfd_remove_devices would iterate over all devices sharing a parent with
an mfd device regardless of whether they were allocated by the mfd core
or not. This especially caused problems when the device structure was
not contained within a platform_device, because to_platform_device is
used on each device pointer.

This patch defines a device_type for mfd devices and checks this is
present from mfd_remove_devices_fn before processing the device.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Tested-by: Peter Tyser <ptyser@xes-inc.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/mfd/mfd-core.c