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lsi53c895a: Update dnad when skipping MSGOUT bytes

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Update not only dbc but also dnad when skipping bytes during the MSGOUT
phase.  Previously only dbc was updated which is probably wrong and
could lead to bogus message codes being read.

Tested on Linux and Windows Server 2003.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Stefan Hajnoczi 2011-01-26 12:31:00 +00:00 committed by Aurelien Jarno
parent dcfd08653b
commit 444dd39b5f
1 changed files with 9 additions and 2 deletions
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11
hw/lsi53c895a.c
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@ -842,6 +842,13 @@ static uint8_t lsi_get_msgbyte(LSIState *s)
return data;
}
/* Skip the next n bytes during a MSGOUT phase. */
static void lsi_skip_msgbytes(LSIState *s, unsigned int n)
{
s->dnad += n;
s->dbc -= n;
}
static void lsi_do_msgout(LSIState *s)
{
uint8_t msg;
@ -869,11 +876,11 @@ static void lsi_do_msgout(LSIState *s)
switch (msg) {
case 1:
DPRINTF("SDTR (ignored)\n");
s->dbc -= 2;
lsi_skip_msgbytes(s, 2);
break;
case 3:
DPRINTF("WDTR (ignored)\n");
s->dbc -= 1;
lsi_skip_msgbytes(s, 1);
break;
default:
goto bad;