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Fix pccnpollc().

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This commit is contained in:
mycroft 1995-05-03 20:46:32 +00:00
parent 11fa45b258
commit d23aebf3bb
1 changed files with 17 additions and 8 deletions
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25
sys/arch/i386/isa/pccons.c
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@ -1,4 +1,4 @@
/* $NetBSD: pccons.c,v 1.87 1995/05/01 08:25:38 mycroft Exp $ */
/* $NetBSD: pccons.c,v 1.88 1995/05/03 20:46:32 mycroft Exp $ */
/*-
* Copyright (c) 1993, 1994, 1995 Charles Hannum. All rights reserved.
@ -775,16 +775,25 @@ pccnpollc(dev, on)
polling = on;
if (!on) {
register int s;
int unit;
struct pc_softc *sc;
int s;
/*
* If disabling polling, make sure there are no bytes left in
* the FIFO, holding up the interrupt line. Otherwise we
* won't get any further interrupts.
* If disabling polling on a device that's been configured,
* make sure there are no bytes left in the FIFO, holding up
* the interrupt line. Otherwise we won't get any further
* interrupts.
*/
s = spltty();
pcintr(0);
splx(s);
unit = PCUNIT(dev);
if (pccd.cd_ndevs > unit) {
sc = pccd.cd_devs[unit];
if (sc != 0) {
s = spltty();
pcintr(sc);
splx(s);
}
}
}
}