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authorEric Moore <eric.moore@lsil.com>2006-06-29 17:38:43 -0600
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-06-30 21:29:23 -0500
commit3e00a5b28782d65b7ac91e1e9812c281c2ec7af0 (patch)
treeb9dd446bf2bbc043cc1982c5cfe664588094ac8e /drivers/message/fusion
parent376ac8307868f93a0b9aa277f43dee0f63c41c1b (diff)
[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 <jbeulich@novell.com> Signed-off-by: Andrew Morton <akpm@osdl.com> Signed-off-by: Eric Moore <Eric.Moore@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/message/fusion')
-rw-r--r--drivers/message/fusion/mptbase.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 8ac77caf933..20609966c2a 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;
}