Merge tag 'ffa-fixes-5.15' of...

Merge tag 'ffa-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm FF-A driver fixes for v5.15

Couple of fixes addressing issues when FFA driver is build as a module.
One adds the device unregistration which was missing and causes issue
when loading the module second time after unloading once. Another one
adds the missing remove callback on the ffa bus which was missing due
to which modules depending on FFA(e.g. OPTEE) will fail to remove the
device and faults next time that module is loaded again.

* tag 'ffa-fixes-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Fix __ffa_devices_unregister
  firmware: arm_ffa: Add missing remove callback to ffa_bus_type

Link: https://lore.kernel.org/r/20211006153231.4061789-1-sudeep.holla@arm.comSigned-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/firmware/arm_ffa/bus.c

@@ -49,6 +49,13 @@ static int ffa_device_probe(struct device *dev)
 	return ffa_drv->probe(ffa_dev);
 }
 
+static void ffa_device_remove(struct device *dev)
+{
+	struct ffa_driver *ffa_drv = to_ffa_driver(dev->driver);
+
+	ffa_drv->remove(to_ffa_dev(dev));
+}
+
 static int ffa_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
 	struct ffa_device *ffa_dev = to_ffa_dev(dev);
@@ -86,6 +93,7 @@ struct bus_type ffa_bus_type = {
 	.name		= "arm_ffa",
 	.match		= ffa_device_match,
 	.probe		= ffa_device_probe,
+	.remove		= ffa_device_remove,
 	.uevent		= ffa_device_uevent,
 	.dev_groups	= ffa_device_attributes_groups,
 };
@@ -127,7 +135,7 @@ static void ffa_release_device(struct device *dev)
 
 static int __ffa_devices_unregister(struct device *dev, void *data)
 {
-	ffa_release_device(dev);
+	device_unregister(dev);
 
 	return 0;
 }