From: Brian King <brking@linux.vnet.ibm.com>
Date: Mon, 27 Jun 2016 14:09:40 +0000 (-0500)
Subject: ipr: Clear interrupt on croc/crocodile when running with LSI
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0c1ab7b4638d3f9cf37514acb6cf0a9d2d60115f;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

ipr: Clear interrupt on croc/crocodile when running with LSI

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@vger.kernel.org>
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: Willy Tarreau <w@1wt.eu>
---

diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 25ac2c00f8b..2891faa8e38 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");
 	}