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Commit 9dadfb97 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Martin K. Petersen
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scsi: ipr: Fix runaway IRQs when falling back from MSI to LSI 



LSIs must be ack'ed with an MMIO otherwise they remain asserted
forever. This is controlled by the "clear_isr" flag.

While we set that flag properly when deciding initially whether to use
LSIs or MSIs, we fail to set it if we first chose MSIs, the test fails,
then fallback to LSIs.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarBrian King <brking@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent af25756d

drivers/scsi/ipr.c

+1 −0
Original line number Diff line number Diff line
@@ -10157,6 +10157,7 @@ static int ipr_probe_ioa(struct pci_dev *pdev, 
			pci_free_irq_vectors(pdev);



			ioa_cfg->nvectors = 1;

			ioa_cfg->clear_isr = 1;

			break;

		default:

			goto out_msi_disable;