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Re: [Qemu-devel] [PATCH] scsi-generic: correct 6-bytes commands transfer


From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH] scsi-generic: correct 6-bytes commands transfer length
Date: Mon, 22 Sep 2008 10:29:47 -0500
User-agent: Thunderbird 2.0.0.16 (X11/20080723)

Laurent Vivier wrote:
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 <address@hidden>

Applied.  Thanks.

Regards,

Anthony Liguori

---
 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:





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