* [Qemu-devel] [PATCH] scsi-generic: correct 6-bytes commands transfer length
@ 2008-09-22 14:57 Laurent Vivier
2008-09-22 15:29 ` Anthony Liguori
0 siblings, 1 reply; 2+ messages in thread
From: Laurent Vivier @ 2008-09-22 14:57 UTC (permalink / raw)
To: qemu-devel@nongnu.org
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
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [Qemu-devel] [PATCH] scsi-generic: correct 6-bytes commands transfer length
2008-09-22 14:57 [Qemu-devel] [PATCH] scsi-generic: correct 6-bytes commands transfer length Laurent Vivier
@ 2008-09-22 15:29 ` Anthony Liguori
0 siblings, 0 replies; 2+ messages in thread
From: Anthony Liguori @ 2008-09-22 15:29 UTC (permalink / raw)
To: qemu-devel
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 <Laurent.Vivier@bull.net>
>
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:
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2008-09-22 14:57 [Qemu-devel] [PATCH] scsi-generic: correct 6-bytes commands transfer length Laurent Vivier
2008-09-22 15:29 ` Anthony Liguori
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