diff options
| author | Neelesh Gupta <neelegup@linux.vnet.ibm.com> | 2015-02-11 11:57:23 +0530 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2015-03-25 16:53:28 +1100 |
| commit | b921e90260cec1e04988bb3763491de885b67b51 (patch) | |
| tree | a3693a2ebd947a42307aeef87c865f5834cc0dd7 | |
| parent | 792f96e9a769b799a2944e9369e4ea1e467135b2 (diff) | |
| download | powerpc-next-misc.tar.gz | |
powerpc/powernv: Add OPAL message notifier unregister functionnext-misc
Provide an unregister interface for the opal message notifiers
to be called when not needed like during driver unload/remove.
Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com>
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal.c | 7 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 9ee0a30a02cefc..4ea21ea6a999f8 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -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); diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index b0021ac3e0a8cb..8b3834a095f703 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -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 */ |