Messages in this thread Patch in this message | | | From | Suman Anna <> | Subject | [PATCHv3 13/14] mailbox: check for NULL nb in mailbox_put | Date | Tue, 12 Mar 2013 22:24:30 -0500 |
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The mailbox_put function must check the notifier block for NULL before trying to unregister it.
Signed-off-by: Fernando Guzman Lugo <lugo.fernando@gmail.com> Signed-off-by: Suman Anna <s-anna@ti.com> --- drivers/mailbox/mailbox.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c index eaaf87e..c38241a 100644 --- a/drivers/mailbox/mailbox.c +++ b/drivers/mailbox/mailbox.c @@ -473,7 +473,8 @@ EXPORT_SYMBOL(mailbox_get); void mailbox_put(struct mailbox *mbox, struct notifier_block *nb) { - blocking_notifier_chain_unregister(&mbox->notifier, nb); + if (nb) + blocking_notifier_chain_unregister(&mbox->notifier, nb); mailbox_fini(mbox); } EXPORT_SYMBOL(mailbox_put); -- 1.8.1.2
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