Commit b614d55b authored Sep 01, 2020 by Tomas Henzl Committed by Martin K. Petersen Sep 02, 2020

scsi: mpt3sas: Don't call disable_irq from IRQ poll handler

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

Fixes: 320e77ac 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>

parent d2af3914

drivers/scsi/mpt3sas/mpt3sas_base.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1733,7 +1733,7 @@ _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);

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