1 files changed, 46 insertions, 5 deletions

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index eb76ba055021..47dafe6b8a66 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1026,8 +1026,13 @@ static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
 	/* flush requests don't perform I/O, zero the S/G table */
 	memset(&cmd->sdb, 0, sizeof(cmd->sdb));
 
-	cmd->cmnd[0] = SYNCHRONIZE_CACHE;
-	cmd->cmd_len = 10;
+	if (cmd->device->use_16_for_sync) {
+		cmd->cmnd[0] = SYNCHRONIZE_CACHE_16;
+		cmd->cmd_len = 16;
+	} else {
+		cmd->cmnd[0] = SYNCHRONIZE_CACHE;
+		cmd->cmd_len = 10;
+	}
 	cmd->transfersize = 0;
 	cmd->allowed = sdkp->max_retries;
 
@@ -1587,9 +1592,12 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr)
 		sshdr = &my_sshdr;
 
 	for (retries = 3; retries > 0; --retries) {
-		unsigned char cmd[10] = { 0 };
+		unsigned char cmd[16] = { 0 };
 
-		cmd[0] = SYNCHRONIZE_CACHE;
+		if (sdp->use_16_for_sync)
+			cmd[0] = SYNCHRONIZE_CACHE_16;
+		else
+			cmd[0] = SYNCHRONIZE_CACHE;
 		/*
 		 * Leave the rest of the command zero to indicate
 		 * flush everything.
@@ -1701,6 +1709,36 @@ static char sd_pr_type(enum pr_type type)
 	}
 };
 
+static int sd_scsi_to_pr_err(struct scsi_sense_hdr *sshdr, int result)
+{
+	switch (host_byte(result)) {
+	case DID_TRANSPORT_MARGINAL:
+	case DID_TRANSPORT_DISRUPTED:
+	case DID_BUS_BUSY:
+		return PR_STS_RETRY_PATH_FAILURE;
+	case DID_NO_CONNECT:
+		return PR_STS_PATH_FAILED;
+	case DID_TRANSPORT_FAILFAST:
+		return PR_STS_PATH_FAST_FAILED;
+	}
+
+	switch (status_byte(result)) {
+	case SAM_STAT_RESERVATION_CONFLICT:
+		return PR_STS_RESERVATION_CONFLICT;
+	case SAM_STAT_CHECK_CONDITION:
+		if (!scsi_sense_valid(sshdr))
+			return PR_STS_IOERR;
+
+		if (sshdr->sense_key == ILLEGAL_REQUEST &&
+		    (sshdr->asc == 0x26 || sshdr->asc == 0x24))
+			return -EINVAL;
+
+		fallthrough;
+	default:
+		return PR_STS_IOERR;
+	}
+}
+
 static int sd_pr_command(struct block_device *bdev, u8 sa,
 		u64 key, u64 sa_key, u8 type, u8 flags)
 {
@@ -1729,7 +1767,10 @@ static int sd_pr_command(struct block_device *bdev, u8 sa,
 		scsi_print_sense_hdr(sdev, NULL, &sshdr);
 	}
 
-	return result;
+	if (result <= 0)
+		return result;
+
+	return sd_scsi_to_pr_err(&sshdr, result);
 }
 
 static int sd_pr_register(struct block_device *bdev, u64 old_key, u64 new_key,