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Commit 798af00c authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt
Browse files

powerpc/powernv: Add opal_notifier_unregister() and export to modules 



opal_notifier_register() is missing a pending "unregister" variant
and should be exposed to modules.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 8f619b54

arch/powerpc/include/asm/opal.h

+2 −0
Original line number Diff line number Diff line
@@ -892,6 +892,8 @@ extern int early_init_dt_scan_opal(unsigned long node, const char *uname, 
				   int depth, void *data);



extern int opal_notifier_register(struct notifier_block *nb);

extern int opal_notifier_unregister(struct notifier_block *nb);



extern int opal_message_notifier_register(enum OpalMessageType msg_type,

						struct notifier_block *nb);

extern void opal_notifier_enable(void);

arch/powerpc/platforms/powernv/opal.c

+14 −0
Original line number Diff line number Diff line
@@ -180,6 +180,20 @@ int opal_notifier_register(struct notifier_block *nb) 
	atomic_notifier_chain_register(&opal_notifier_head, nb);

	return 0;

}

EXPORT_SYMBOL_GPL(opal_notifier_register);



int opal_notifier_unregister(struct notifier_block *nb)

{

	if (!nb) {

		pr_warning("%s: Invalid argument (%p)\n",

			   __func__, nb);

		return -EINVAL;

	}



	atomic_notifier_chain_unregister(&opal_notifier_head, nb);

	return 0;

}

EXPORT_SYMBOL_GPL(opal_notifier_unregister);



static void opal_do_notifier(uint64_t events)

{