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lsi: extract lsi_find_by_tag 

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Paolo Bonzini 2011-04-18 12:01:45 +02:00
parent ad2d30f79d
commit 11257187e1
1 changed files with 38 additions and 25 deletions
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25
hw/lsi53c895a.c
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@ -652,14 +652,31 @@ static void lsi_reselect(LSIState *s, lsi_request *p)
}
}
static lsi_request *lsi_find_by_tag(LSIState *s, uint32_t tag)
{
lsi_request *p;
QTAILQ_FOREACH(p, &s->queue, next) {
if (p->tag == tag) {
return p;
}
}
return NULL;
}
/* Record that data is available for a queued command. Returns zero if
the device was reselected, nonzero if the IO is deferred. */
static int lsi_queue_tag(LSIState *s, uint32_t tag, uint32_t arg)
{
lsi_request *p;
QTAILQ_FOREACH(p, &s->queue, next) {
if (p->tag == tag) {
p = lsi_find_by_tag(s, tag);
if (!p) {
BADF("IO with unknown tag %d\n", tag);
return 1;
}
if (p->pending) {
BADF("Multiple IO pending for tag %d\n", tag);
}
@ -680,10 +697,6 @@ static int lsi_queue_tag(LSIState *s, uint32_t tag, uint32_t arg)
p->pending = arg;
return 1;
}
}
}
BADF("IO with unknown tag %d\n", tag);
return 1;
}
/* Callback to indicate that the SCSI layer has completed a transfer. */