From: Sarang Radke <sarang.radke@qlogic.com>
Date: Thu, 8 Dec 2011 06:45:31 +0000 (+0530)
Subject: qla4xxx: clear the RISC interrupt bit during firmware init
X-Git-Tag: v2.6.39-400.9.0~677
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=28248df8a45bdaad8feab71992169d89c7dec4c6;p=users%2Fjedix%2Flinux-maple.git

qla4xxx: clear the RISC interrupt bit during firmware init

Fix for the kdump kernel panic issue with 80xx adapters.

JIRA Key: IUEKR2ISCSI-11

Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Sarang Radke <sarang.radke@qlogic.com>
Signed-off-by: Tej Parkash <tej.parkash@qlogic.com>
---

diff --git a/drivers/scsi/qla4xxx/ql4_nx.c b/drivers/scsi/qla4xxx/ql4_nx.c
index 8d6bc1b2ff17..78f1111158d7 100644
--- a/drivers/scsi/qla4xxx/ql4_nx.c
+++ b/drivers/scsi/qla4xxx/ql4_nx.c
@@ -1875,6 +1875,11 @@ exit:
 int qla4_8xxx_load_risc(struct scsi_qla_host *ha)
 {
 	int retval;
+
+	/* clear the interrupt */
+	writel(0, &ha->qla4_8xxx_reg->host_int);
+	readl(&ha->qla4_8xxx_reg->host_int);
+
 	retval = qla4_8xxx_device_state_handler(ha);
 
 	if (retval == QLA_SUCCESS && !test_bit(AF_INIT_DONE, &ha->flags))