SCSI divide capacity by s->cluster_size (Rik van Riel)

Paul Brook pointed out that the number of sectors reported
by the SCSI read capacity commands needs to be divided by
s->cluster_size, because bdrv_get_geometry reports the number
of 512 byte sectors, while emulated CDROMs report 2048 byte
sectors back to the guest.

This has no consequences for emulated hard disks, which use
a cluster size of 1.

aliguori: fixed typo

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6469 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 434c3cb36789925f3358997a2e078120c0e3f029..bc12e3fc2344cd8379a4df064d50ddf3457898d8 100644 (file)
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -734,6 +734,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
         /* The normal LEN field for this command is zero.  */
        memset(outbuf, 0, 8);
        bdrv_get_geometry(s->bdrv, &nb_sectors);
+        nb_sectors /= s->cluster_size;
         /* Returned value is the address of the last sector.  */
         if (nb_sectors) {
             nb_sectors--;
@@ -834,6 +835,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
             DPRINTF("SAI READ CAPACITY(16)\n");
             memset(outbuf, 0, len);
             bdrv_get_geometry(s->bdrv, &nb_sectors);
+            nb_sectors /= s->cluster_size;
             /* Returned value is the address of the last sector.  */
             if (nb_sectors) {
                 nb_sectors--;