From 9caae4d87ca0087edd6c02efd674f13fe0419ee9 Mon Sep 17 00:00:00 2001 From: Fernando Guzman Lugo Date: Wed, 27 Jan 2010 20:04:02 -0600 Subject: Mailbox: Check valid registered callback before calling This patch checks if the mailbox user has assinged a valid callback fuction before calling it. Signed-off-by: Fernando Guzman Lugo Signed-off-by: Hiroshi DOYU --- arch/arm/plat-omap/mailbox.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c index 77c23f5a003..72efbe5be57 100644 --- a/arch/arm/plat-omap/mailbox.c +++ b/arch/arm/plat-omap/mailbox.c @@ -146,7 +146,8 @@ static void mbox_rx_work(struct work_struct *work) msg = (mbox_msg_t)rq->special; blk_end_request_all(rq, 0); - mbox->rxq->callback((void *)msg); + if (mbox->rxq->callback) + mbox->rxq->callback((void *)msg); } } -- cgit v1.2.3