qla4xxx: clear the SCSI COMPLETION INTERRUPT bit during firmware init

Fix for the kdump kernel panic issue on 40xx adapters.

JIRA Key: IUEKR2ISCSI-10

Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Prasanna Mumbai <prasanna.mumbai@qlogic.com>
Signed-off-by: Tej Parkash <tej.parkash@qlogic.com>

diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
index 204138111d5ac37fa12b6ec55c48874b341da173..cf2ab4e2d16cd1542ac003ccf7b8977e23551e8b 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_init.c
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -697,6 +697,9 @@ int qla4xxx_start_firmware(struct scsi_qla_host *ha)
                        writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
                               &ha->reg->ctrl_status);
                        readl(&ha->reg->ctrl_status);
+                       writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
+                               &ha->reg->ctrl_status);
+                       readl(&ha->reg->ctrl_status);
                        spin_unlock_irqrestore(&ha->hardware_lock, flags);
                        if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
                                DEBUG2(printk("scsi%ld: %s: Get firmware "