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-rw-r--r--hw/scsi-disk.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 0b06fefc1d..9dd2be8866 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -956,8 +956,9 @@ static int scsi_disk_emulate_mode_sense(SCSIDiskReq *r, uint8_t *outbuf)
p += 8;
}
+ /* MMC prescribes that CD/DVD drives have no block descriptors. */
bdrv_get_geometry(s->qdev.conf.bs, &nb_sectors);
- if (!dbd && nb_sectors) {
+ if (!dbd && s->qdev.type == TYPE_DISK && nb_sectors) {
if (r->req.cmd.buf[0] == MODE_SENSE) {
outbuf[3] = 8; /* Block descriptor length */
} else { /* MODE_SENSE_10 */