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| author | Neelesh Gupta | 2015-02-11 07:27:23 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt | 2015-03-25 06:53:28 +0100 |
| commit | b921e90260cec1e04988bb3763491de885b67b51 (patch) | |
| tree | a3693a2ebd947a42307aeef87c865f5834cc0dd7 /arch/powerpc/platforms/powernv/opal.c | |
| parent | powerpc/powernv: Fix the overflow of OPAL message notifiers head array (diff) | |
| download | kernel-qcow2-linux-b921e90260cec1e04988bb3763491de885b67b51.tar.gz kernel-qcow2-linux-b921e90260cec1e04988bb3763491de885b67b51.tar.xz kernel-qcow2-linux-b921e90260cec1e04988bb3763491de885b67b51.zip | |
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: 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>
Diffstat (limited to 'arch/powerpc/platforms/powernv/opal.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index b0021ac3e0a8..8b3834a095f7 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 */ |