1 files changed, 44 insertions, 2 deletions

diff --git a/drivers/scsi/scsi_common.c b/drivers/scsi/scsi_common.c
index 6e50e81a8216..9c14fdf61037 100644
--- a/drivers/scsi/scsi_common.c
+++ b/drivers/scsi/scsi_common.c
@@ -8,6 +8,7 @@
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/module.h>
+#include <uapi/linux/pr.h>
 #include <asm/unaligned.h>
 #include <scsi/scsi_common.h>
 
@@ -63,6 +64,48 @@ const char *scsi_device_type(unsigned type)
 }
 EXPORT_SYMBOL(scsi_device_type);
 
+enum pr_type scsi_pr_type_to_block(enum scsi_pr_type type)
+{
+	switch (type) {
+	case SCSI_PR_WRITE_EXCLUSIVE:
+		return PR_WRITE_EXCLUSIVE;
+	case SCSI_PR_EXCLUSIVE_ACCESS:
+		return PR_EXCLUSIVE_ACCESS;
+	case SCSI_PR_WRITE_EXCLUSIVE_REG_ONLY:
+		return PR_WRITE_EXCLUSIVE_REG_ONLY;
+	case SCSI_PR_EXCLUSIVE_ACCESS_REG_ONLY:
+		return PR_EXCLUSIVE_ACCESS_REG_ONLY;
+	case SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS:
+		return PR_WRITE_EXCLUSIVE_ALL_REGS;
+	case SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS:
+		return PR_EXCLUSIVE_ACCESS_ALL_REGS;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(scsi_pr_type_to_block);
+
+enum scsi_pr_type block_pr_type_to_scsi(enum pr_type type)
+{
+	switch (type) {
+	case PR_WRITE_EXCLUSIVE:
+		return SCSI_PR_WRITE_EXCLUSIVE;
+	case PR_EXCLUSIVE_ACCESS:
+		return SCSI_PR_EXCLUSIVE_ACCESS;
+	case PR_WRITE_EXCLUSIVE_REG_ONLY:
+		return SCSI_PR_WRITE_EXCLUSIVE_REG_ONLY;
+	case PR_EXCLUSIVE_ACCESS_REG_ONLY:
+		return SCSI_PR_EXCLUSIVE_ACCESS_REG_ONLY;
+	case PR_WRITE_EXCLUSIVE_ALL_REGS:
+		return SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS;
+	case PR_EXCLUSIVE_ACCESS_ALL_REGS:
+		return SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(block_pr_type_to_scsi);
+
 /**
  * scsilun_to_int - convert a scsi_lun to an int
  * @scsilun:	struct scsi_lun to be converted.
@@ -176,8 +219,7 @@ bool scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
 		if (sb_len > 2)
 			sshdr->sense_key = (sense_buffer[2] & 0xf);
 		if (sb_len > 7) {
-			sb_len = (sb_len < (sense_buffer[7] + 8)) ?
-					 sb_len : (sense_buffer[7] + 8);
+			sb_len = min(sb_len, sense_buffer[7] + 8);
 			if (sb_len > 12)
 				sshdr->asc = sense_buffer[12];
 			if (sb_len > 13)