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Commit b921e902 authored by Neelesh Gupta's avatar Neelesh Gupta Committed by Benjamin Herrenschmidt
Browse files

powerpc/powernv: Add OPAL message notifier unregister function 



Provide an unregister interface for the opal message notifiers
to be called when not needed like during driver unload/remove.

Signed-off-by: default avatarNeelesh Gupta <neelegup@linux.vnet.ibm.com>
Reviewed-by: default avatarVasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 792f96e9

arch/powerpc/include/asm/opal.h

+2 −0
Original line number Diff line number Diff line
@@ -948,6 +948,8 @@ extern int opal_notifier_unregister(struct notifier_block *nb); 


extern int opal_message_notifier_register(enum OpalMessageType msg_type,

						struct notifier_block *nb);

extern int opal_message_notifier_unregister(enum OpalMessageType msg_type,

					    struct notifier_block *nb);

extern void opal_notifier_enable(void);

extern void opal_notifier_disable(void);

extern void opal_notifier_update_evt(uint64_t evt_mask, uint64_t evt_val);

arch/powerpc/platforms/powernv/opal.c

+7 −0
Original line number Diff line number Diff line
@@ -318,6 +318,13 @@ int opal_message_notifier_register(enum OpalMessageType msg_type, 
				&opal_msg_notifier_head[msg_type], nb);

}



int opal_message_notifier_unregister(enum OpalMessageType msg_type,

				     struct notifier_block *nb)

{

	return atomic_notifier_chain_unregister(

			&opal_msg_notifier_head[msg_type], nb);

}



static void opal_message_do_notify(uint32_t msg_type, void *msg)

{

	/* notify subscribers */