When opt_xfer_len is zero, Linux ignores max_xfer_len erroneously.
While that obviously should be fixed, we do older guests a favor to
always filling in a value.
Signed-off-by: Fam Zheng <f...@redhat.com>
---
hw/scsi/scsi-generic.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
index 2933119..a55ff87 100644
--- a/hw/scsi/scsi-generic.c
+++ b/hw/scsi/scsi-generic.c
@@ -237,9 +237,8 @@ static void scsi_read_complete(void * opaque, int ret)
assert(max_transfer);
stl_be_p(&r->buf[8], max_transfer);
/* Also take care of the opt xfer len. */
- if (ldl_be_p(&r->buf[12]) > max_transfer) {
- stl_be_p(&r->buf[12], max_transfer);
- }
+ stl_be_p(&r->buf[12],
+ MIN_NON_ZERO(max_transfer, ldl_be_p(&r->buf[12])));
}
scsi_req_data(&r->req, len);
scsi_req_unref(&r->req);
--
2.9.3
