From a0d4136e5ce110c351da7aa28c6e8504b468da15 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Fri, 29 Mar 2019 01:41:49 +0000
Subject: [PATCH] qla2x00t-32gbit: Backport to kernel v4.10

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8104 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 qla2x00t-32gbit/qla_os.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/qla2x00t-32gbit/qla_os.c b/qla2x00t-32gbit/qla_os.c
index 31e4fe280..e289d6e52 100644
--- a/qla2x00t-32gbit/qla_os.c
+++ b/qla2x00t-32gbit/qla_os.c
@@ -14,7 +14,9 @@
 #include <linux/kobject.h>
 #include <linux/slab.h>
 #include <linux/blk-mq-pci.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0)
 #include <linux/refcount.h>
+#endif
 #include <linux/version.h>
 
 #include <scsi/scsi_tcq.h>
@@ -1289,11 +1291,18 @@ qla2x00_wait_for_chip_reset(scsi_qla_host_t *vha)
 static int
 sp_get(struct srb *sp)
 {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0)
+	if (!atomic_inc_not_zero(&sp->ref_count))
+		return ENXIO;
+	else
+		return 0;
+#else
 	if (!refcount_inc_not_zero((refcount_t*)&sp->ref_count))
 		/* kref get fail */
 		return ENXIO;
 	else
 		return 0;
+#endif
 }
 
 #define ISP_REG_DISCONNECT 0xffffffffU