[PATCH 3.10 150/180] ipr: Clear interrupt on croc/crocodile when running with LSI

[Willy Tarreau]

From: Brian King <brking@xxxxxxxxxxxxxxxxxx>

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.

Cc: <stable@xxxxxxxxxxxxxxx>
Tested-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Brian King <brking@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Willy Tarreau <w@xxxxxx>
---
 drivers/scsi/ipr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 25ac2c0..2891faa 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -9607,6 +9607,7 @@ static int ipr_probe_ioa(struct pci_dev *pdev,
 		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");
 	}
-- 
2.8.0.rc2.1.gbe9624a