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-rw-r--r--hw/scsi/scsi-bus.c2
-rw-r--r--hw/scsi/scsi-disk.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
index 1eaeffc830..9646743a7d 100644
--- a/hw/scsi/scsi-bus.c
+++ b/hw/scsi/scsi-bus.c
@@ -944,7 +944,7 @@ static int scsi_req_xfer(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
         break;
     case WRITE_SAME_10:
     case WRITE_SAME_16:
-        cmd->xfer = dev->blocksize;
+        cmd->xfer = buf[1] & 1 ? 0 : dev->blocksize;
         break;
     case READ_CAPACITY_10:
         cmd->xfer = 8;
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index c65c1ce56d..5b7a48f5a5 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -1807,7 +1807,7 @@ static void scsi_disk_emulate_write_same(SCSIDiskReq *r, uint8_t *inbuf)
         return;
     }
 
-    if (buffer_is_zero(inbuf, s->qdev.blocksize)) {
+    if ((req->cmd.buf[1] & 0x1) || buffer_is_zero(inbuf, s->qdev.blocksize)) {
         int flags = (req->cmd.buf[1] & 0x8) ? BDRV_REQ_MAY_UNMAP : 0;
 
         /* The request is used as the AIO opaque value, so add a ref.  */