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Subject[PATCH 5.8 033/177] scsi: mpt3sas: Dont call disable_irq from IRQ poll handler
Date
From: Tomas Henzl <thenzl@redhat.com>

[ Upstream commit b614d55b970d08bcac5b0bc15a5526181b3e4459 ]

disable_irq() might sleep, replace it with disable_irq_nosync(). For
synchronisation 'irq_poll_scheduled' is sufficient

Fixes: 320e77acb3 scsi: mpt3sas: Irq poll to avoid CPU hard lockups
Link: https://lore.kernel.org/r/20200901145026.12174-1-thenzl@redhat.com
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 96b78fdc6b8a9..a85c9672c6ea3 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -1732,7 +1732,7 @@ _base_irqpoll(struct irq_poll *irqpoll, int budget)
reply_q = container_of(irqpoll, struct adapter_reply_queue,
irqpoll);
if (reply_q->irq_line_enable) {
- disable_irq(reply_q->os_irq);
+ disable_irq_nosync(reply_q->os_irq);
reply_q->irq_line_enable = false;
}
num_entries = _base_process_reply_queue(reply_q);
--
2.25.1


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