scsi: megaraid_sas: Don't call disable_irq from process IRQ poll

[ Upstream commit d2af39141eea34ef651961e885f49d96781a1016 ]

disable_irq() might sleep. Replace it with disable_irq_nosync() which is
sufficient as irq_poll_scheduled protects against concurrently running
complete_cmd_fusion() from megasas_irqpoll() and megasas_isr_fusion().

Link: https://lore.kernel.org/r/20200827165332.8432-1-thenzl@redhat.com
Fixes: a6ffd5bf681 scsi: megaraid_sas: Call disable_irq from process IRQ poll
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>

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 5bcef9769740b0d9d58b9d0663daabb833ef4c10..5dcd7b9b72cedcf721568a9a91e935335326c32b 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -3738,7 +3738,7 @@ int megasas_irqpoll(struct irq_poll *irqpoll, int budget)
        instance = irq_ctx->instance;
 
        if (irq_ctx->irq_line_enable) {
-               disable_irq(irq_ctx->os_irq);
+               disable_irq_nosync(irq_ctx->os_irq);
                irq_ctx->irq_line_enable = false;
        }