From: Laurent Vivier <Laurent.Vivier@bull.net>
To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Subject: [Qemu-devel] [PATCH] scsi-generic: correct 6-bytes commands transfer length
Date: Mon, 22 Sep 2008 16:57:09 +0200 [thread overview]
Message-ID: <1222095429.4151.12.camel@frecb07144> (raw)
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>
---
hw/scsi-generic.c | 3 +++
1 file changed, 3 insertions(+)
Index: qemu/hw/scsi-generic.c
===================================================================
--- qemu.orig/hw/scsi-generic.c 2008-09-22 10:47:07.000000000 +0200
+++ qemu/hw/scsi-generic.c 2008-09-22 14:32:22.000000000 +0200
@@ -352,6 +352,9 @@ static int scsi_length(uint8_t *cmd, int
case 0:
*len = cmd[4];
*cmdlen = 6;
+ /* length 0 means 256 blocks */
+ if (*len == 0)
+ *len = 256;
break;
case 1:
case 2:
--
----------------- Laurent.Vivier@bull.net ------------------
"La perfection est atteinte non quand il ne reste rien à
ajouter mais quand il ne reste rien à enlever." Saint Exupéry
next reply other threads:[~2008-09-22 14:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-22 14:57 Laurent Vivier [this message]
2008-09-22 15:29 ` [Qemu-devel] [PATCH] scsi-generic: correct 6-bytes commands transfer length Anthony Liguori
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