[PATCH 3.16 248/305] ipr: Clear interrupt on croc/crocodile when running with LSI

Ben Hutchings
2016-08-14T10:59:39Z

From: Brian King <brking@linux.vnet.ibm.com>

commit 54e430bbd490e18ab116afa4cd90dcc45787b3df upstream.

If we fall back to using LSI on the Croc or Crocodile chip we need to
clear the interrupt so we don't hang the system.

Tested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/scsi/ipr.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -9753,6 +9753,7 @@ static int ipr_probe_ioa(struct pci_dev
ioa_cfg->intr_flag = IPR_USE_MSI;
else {
ioa_cfg->intr_flag = IPR_USE_LSI;
+ ioa_cfg->clear_isr = 1;
ioa_cfg->nvectors = 1;
dev_info(&pdev->dev, "Cannot enable MSI.\n");
}