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

[Ben Hutchings]

3.16.37-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Brian King <brk...@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 <b...@kernel.crashing.org>
Signed-off-by: Brian King <brk...@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.peter...@oracle.com>
Signed-off-by: Ben Hutchings <b...@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");
        }