[PATCH 5.4 177/260] scsi: qla2xxx: Changes to support kdump kernel

From: Greg Kroah-Hartman
Date: Mon Sep 20 2021 - 14:21:07 EST


From: Saurav Kashyap <skashyap@xxxxxxxxxxx>

commit 62e0dec59c1e139dab55aff5aa442adc97804271 upstream.

Avoid allocating firmware dump and only allocate a single queue for a kexec
kernel.

Link: https://lore.kernel.org/r/20210810043720.1137-12-njavali@xxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
Signed-off-by: Saurav Kashyap <skashyap@xxxxxxxxxxx>
Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_os.c | 6 ++++++
1 file changed, 6 insertions(+)

--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -15,6 +15,7 @@
#include <linux/slab.h>
#include <linux/blk-mq-pci.h>
#include <linux/refcount.h>
+#include <linux/crash_dump.h>

#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
@@ -2799,6 +2800,11 @@ qla2x00_probe_one(struct pci_dev *pdev,
return ret;
}

+ if (is_kdump_kernel()) {
+ ql2xmqsupport = 0;
+ ql2xallocfwdump = 0;
+ }
+
/* This may fail but that's ok */
pci_enable_pcie_error_reporting(pdev);