From 3e00a5b28782d65b7ac91e1e9812c281c2ec7af0 Mon Sep 17 00:00:00 2001 From: Eric Moore Date: Thu, 29 Jun 2006 17:38:43 -0600 Subject: [SCSI] mptbase: mpt_interrupt should return IRQ_NONE The way mpt_interrupt() was coded, it was impossible for the unhandled interrupt detection logic to ever trigger. All interrupt handlers should return IRQ_NONE when they have nothing to do. Signed-off-by: Jan Beulich Signed-off-by: Andrew Morton Signed-off-by: Eric Moore Signed-off-by: James Bottomley --- drivers/message/fusion/mptbase.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'drivers/message') diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index 8ac77caf9337..20609966c2a9 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -369,20 +369,21 @@ static irqreturn_t mpt_interrupt(int irq, void *bus_id, struct pt_regs *r) { MPT_ADAPTER *ioc = bus_id; - u32 pa; + u32 pa = CHIPREG_READ32_dmasync(&ioc->chip->ReplyFifo); + + if (pa == 0xFFFFFFFF) + return IRQ_NONE; /* * Drain the reply FIFO! */ - while (1) { - pa = CHIPREG_READ32_dmasync(&ioc->chip->ReplyFifo); - if (pa == 0xFFFFFFFF) - return IRQ_HANDLED; - else if (pa & MPI_ADDRESS_REPLY_A_BIT) + do { + if (pa & MPI_ADDRESS_REPLY_A_BIT) mpt_reply(ioc, pa); else mpt_turbo_reply(ioc, pa); - } + pa = CHIPREG_READ32_dmasync(&ioc->chip->ReplyFifo); + } while (pa != 0xFFFFFFFF); return IRQ_HANDLED; } -- cgit v1.2.3-59-g8ed1b