From: aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 22 Sep 2008 15:30:26 +0000 (+0000)
Subject: scsi-generic: correct 6-bytes commands transfer length (Laurent Vivier)
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=72ecb8d9dd339d8c7f3227b25b98b726e3933ebd;p=qemu.git

scsi-generic: correct 6-bytes commands transfer length (Laurent Vivier)

According to SCSI documentation, for 6 bytes commands (READ(6),
WRITE(6)), if transfer length is 0 it specifies 256 blocks.

Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5292 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/hw/scsi-generic.c b/hw/scsi-generic.c
index 88147b5df0..e23276f90c 100644
--- a/hw/scsi-generic.c
+++ b/hw/scsi-generic.c
@@ -352,6 +352,9 @@ static int scsi_length(uint8_t *cmd, int blocksize, int *cmdlen, uint32_t *len)
     case 0:
         *len = cmd[4];
         *cmdlen = 6;
+        /* length 0 means 256 blocks */
+        if (*len == 0)
+            *len = 256;
         break;
     case 1:
     case 2: