From 6edaec0d400083363cf4437e0f239f4e1d2a7682 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Fri, 3 Sep 2021 05:01:43 +0000
Subject: [PATCH 1/2] scst: Make msg_byte() and driver_byte() available when
 building against v5.14

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9504 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scst/include/backport.h | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/scst/include/backport.h b/scst/include/backport.h
index 353d975be..d58fe830c 100644
--- a/scst/include/backport.h
+++ b/scst/include/backport.h
@@ -2118,6 +2118,37 @@ static inline struct ib_pd *ib_alloc_pd_backport(struct ib_device *device)
 	})
 #endif
 
+/* <scsi/scsi.h> */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 14, 0)
+#ifndef msg_byte
+/*
+ * See also commit 54cf31d07aa8 ("scsi: core: Drop message byte helper";
+ * v5.14-rc1).
+ */
+static inline uint8_t msg_byte(uint32_t result)
+{
+	return (result >> 8) & 0xff;
+}
+#endif
+#ifndef host_byte
+static inline uint8_t host_byte(uint32_t result)
+{
+	return (result >> 16) & 0xff;
+}
+#endif
+#ifndef driver_byte
+/*
+ * See also commit 54c29086195f ("scsi: core: Drop the now obsolete driver_byte
+ * definitions"; v5.14-rc1).
+ */
+static inline uint8_t driver_byte(uint32_t result)
+{
+	return (result >> 24) & 0xff;
+}
+#endif
+#endif
+
 /* <scsi/scsi_cmnd.h> */
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24) || \

From 3624c1baafdfa518789550e23f771d134fc7418f Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Fri, 3 Sep 2021 05:05:13 +0000
Subject: [PATCH 2/2] scst: Open-code the status_byte() macro

The status_byte() macro and also the SAM_STAT_* macros shifted right by one
bit have been removed from kernel v5.14. Hence open-code status_byte() and
change GOOD into SAM_STAT_GOOD etc.


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9505 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 scst/src/dev_handlers/scst_disk.c | 2 +-
 scst/src/scst_lib.c               | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/scst/src/dev_handlers/scst_disk.c b/scst/src/dev_handlers/scst_disk.c
index fd01b8d1c..e841db45c 100644
--- a/scst/src/dev_handlers/scst_disk.c
+++ b/scst/src/dev_handlers/scst_disk.c
@@ -264,7 +264,7 @@ static void disk_cmd_done(void *data, char *sense, int result, int resid)
 
 	WARN_ON_ONCE(IS_ERR_VALUE((long)result));
 
-	if (status_byte(result) == GOOD)
+	if ((result & 0xff) == SAM_STAT_GOOD)
 		goto out_complete;
 
 	work->result = result;
diff --git a/scst/src/scst_lib.c b/scst/src/scst_lib.c
index 3020bd570..91a6f8f0e 100644
--- a/scst/src/scst_lib.c
+++ b/scst/src/scst_lib.c
@@ -12928,7 +12928,7 @@ static void scst_check_internal_sense(struct scst_device *dev, int result,
 		sl = scst_set_sense(sense, sense_len, dev->d_sense,
 			SCST_LOAD_SENSE(scst_sense_reset_UA));
 		scst_dev_check_set_UA(dev, NULL, sense, sl);
-	} else if ((status_byte(result) == CHECK_CONDITION) &&
+	} else if ((result & 0xff) == SAM_STAT_CHECK_CONDITION &&
 		   scst_is_ua_sense(sense, sense_len))
 		scst_dev_check_set_UA(dev, NULL, sense, sense_len);
 
@@ -13809,7 +13809,7 @@ int scst_obtain_device_parameters(struct scst_device *dev,
 			scst_check_internal_sense(dev, rc, sense_buffer,
 				sizeof(sense_buffer));
 #if 0
-			if ((status_byte(rc) == CHECK_CONDITION) &&
+			if ((rc & 0xff) == SAM_STAT_CHECK_CONDITION &&
 			    scst_sense_valid(sense_buffer)) {
 #else
 			/*