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wdcstart(): Re-add support of shared xfer queue across multiple channels 

(was lost between 1.44 and 1.45).
This commit is contained in:
bouyer 1998-11-29 17:34:49 +00:00
parent e01f39790b
commit 5f088e0243
1 changed files with 6 additions and 1 deletions
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7
sys/dev/ic/wdc.c
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@ -1,4 +1,4 @@
/* $NetBSD: wdc.c,v 1.46 1998/11/23 23:02:11 kenh Exp $ */
/* $NetBSD: wdc.c,v 1.47 1998/11/29 17:34:49 bouyer Exp $ */
/*
@ -420,6 +420,7 @@ wdcstart(chp)
struct channel_softc *chp;
{
struct wdc_xfer *xfer;
struct wdc_softc *wdc = chp->wdc;
#ifdef WDC_DIAGNOSTIC
int spl1, spl2;
@ -437,6 +438,10 @@ wdcstart(chp)
/* is there a xfer ? */
if ((xfer = chp->ch_queue->sc_xfer.tqh_first) == NULL)
return;
/* adjust chp, in case we have a shared queue */
chp = wdc->channels[xfer->channel];
if ((chp->ch_flags & WDCF_ACTIVE) != 0 ) {
return; /* channel aleady active */
}