1 files changed, 17 insertions, 23 deletions

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index b1933041da39..0b09638fa39b 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -836,7 +836,6 @@ static int sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
 	struct bio *bio = rq->bio;
 	sector_t sector = blk_rq_pos(rq);
 	unsigned int nr_sectors = blk_rq_sectors(rq);
-	unsigned int nr_bytes = blk_rq_bytes(rq);
 	int ret;
 
 	if (sdkp->device->no_write_same)
@@ -869,21 +868,7 @@ static int sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
 
 	cmd->transfersize = sdp->sector_size;
 	cmd->allowed = SD_MAX_RETRIES;
-
-	/*
-	 * For WRITE_SAME the data transferred in the DATA IN buffer is
-	 * different from the amount of data actually written to the target.
-	 *
-	 * We set up __data_len to the amount of data transferred from the
-	 * DATA IN buffer so that blk_rq_map_sg set up the proper S/G list
-	 * to transfer a single sector of data first, but then reset it to
-	 * the amount of data to be written right after so that the I/O path
-	 * knows how much to actually write.
-	 */
-	rq->__data_len = sdp->sector_size;
-	ret = scsi_init_io(cmd);
-	rq->__data_len = nr_bytes;
-	return ret;
+	return scsi_init_io(cmd);
 }
 
 static int sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
@@ -2600,7 +2585,8 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer)
 		if (sdp->broken_fua) {
 			sd_first_printk(KERN_NOTICE, sdkp, "Disabling FUA\n");
 			sdkp->DPOFUA = 0;
-		} else if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw) {
+		} else if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw &&
+			   !sdkp->device->use_16_for_rw) {
 			sd_first_printk(KERN_NOTICE, sdkp,
 				  "Uses READ/WRITE(6), disabling FUA\n");
 			sdkp->DPOFUA = 0;
@@ -2783,13 +2769,21 @@ static void sd_read_block_characteristics(struct scsi_disk *sdkp)
 		queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, q);
 	}
 
-	sdkp->zoned = (buffer[8] >> 4) & 3;
-	if (sdkp->zoned == 1)
-		q->limits.zoned = BLK_ZONED_HA;
-	else if (sdkp->device->type == TYPE_ZBC)
+	if (sdkp->device->type == TYPE_ZBC) {
+		/* Host-managed */
 		q->limits.zoned = BLK_ZONED_HM;
-	else
-		q->limits.zoned = BLK_ZONED_NONE;
+	} else {
+		sdkp->zoned = (buffer[8] >> 4) & 3;
+		if (sdkp->zoned == 1)
+			/* Host-aware */
+			q->limits.zoned = BLK_ZONED_HA;
+		else
+			/*
+			 * Treat drive-managed devices as
+			 * regular block devices.
+			 */
+			q->limits.zoned = BLK_ZONED_NONE;
+	}
 	if (blk_queue_is_zoned(q) && sdkp->first_scan)
 		sd_printk(KERN_NOTICE, sdkp, "Host-%s zoned block device\n",
 		      q->limits.zoned == BLK_ZONED_HM ? "managed" : "aware");