From ebb024ff68e6cb07b044b36d0dfe11daa63adeec Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Sun, 26 Jul 2020 23:51:54 +0000
Subject: [PATCH] scst/include/backport.h: Backport qla2x00t-32gbit to older
 kernel versions

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9084 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scst/include/backport.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/scst/include/backport.h b/scst/include/backport.h
index 5ec336841..abb90c6f5 100644
--- a/scst/include/backport.h
+++ b/scst/include/backport.h
@@ -2032,8 +2032,24 @@ enum {
 #define wwn_to_u64(wwn) get_unaligned_be64(wwn)
 #endif
 
+/*
+ * See also commit c39e0af64bce ("scsi: scsi_transport_fc: Add FPIN fc event
+ * codes") # v5.2
+ */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 2, 0)
+static inline void
+fc_host_fpin_rcv(struct Scsi_Host *shost, u32 fpin_len, char *fpin_buf)
+{
+}
+#endif
+
 /* <uapi/scsi/fc/fc_els.h> */
 
+/* See also commit a7dff3ad4787 ("scsi: fc: add FPIN ELS definition") # v5.2 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 2, 0)
+#define ELS_FPIN 0x16
+#endif
+
 /*
  * See also commit 62e9dd177732 ("scsi: qla2xxx: Change in PUREX to handle FPIN
  * ELS requests").