[Qemu-devel] [PATCH v3 07/22] scsi: Advertise limits by blocksize, not 512

[Eric Blake <eblake@redhat.com>]

s->blocksize may be larger than 512, in which case our
tweaks to max_xfer_len and opt_xfer_len must be scaled
appropriately.

Reported-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
CC: qemu-stable@nongnu.org

---
v3: new patch
---
 hw/scsi/scsi-generic.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
index 6a2d89a..75e227d 100644
--- a/hw/scsi/scsi-generic.c
+++ b/hw/scsi/scsi-generic.c
@@ -225,7 +225,8 @@ static void scsi_read_complete(void * opaque, int ret)
     if (s->type == TYPE_DISK &&
         r->req.cmd.buf[0] == INQUIRY &&
         r->req.cmd.buf[2] == 0xb0) {
-        uint32_t max_xfer_len = blk_get_max_transfer_length(s->conf.blk);
+        uint32_t max_xfer_len = blk_get_max_transfer_length(s->conf.blk) /
+            (s->blocksize / BDRV_SECTOR_SIZE);
         if (max_xfer_len) {
             stl_be_p(&r->buf[8], max_xfer_len);
             /* Also take care of the opt xfer len. */
-- 
2.5.5