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Rearrange epintr() to insure proper edge-trigger of the interrupt latch.

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This commit is contained in:
mycroft 1995-02-19 06:13:53 +00:00
parent d162458aeb
commit 0f894be19c
1 changed files with 3 additions and 7 deletions
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10
sys/dev/isa/if_ep.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_ep.c,v 1.69 1995/01/29 07:37:04 cgd Exp $ */
/* $NetBSD: if_ep.c,v 1.70 1995/02/19 06:13:53 mycroft Exp $ */
/*
* Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
@ -684,11 +684,9 @@ epintr(sc)
int ret = 0;
for (;;) {
status = inw(BASE + EP_STATUS);
outw(BASE + EP_COMMAND, C_INTR_LATCH);
if ((status & S_INTR_LATCH) == 0)
/* Not from this card; maybe a chained interrupt? */
return;
status = inw(BASE + EP_STATUS);
if ((status & (S_TX_COMPLETE | S_TX_AVAIL |
S_RX_COMPLETE | S_CARD_FAILURE)) == 0)
@ -713,7 +711,6 @@ epintr(sc)
if (status & S_CARD_FAILURE) {
printf("%s: adapter failure (%x)\n",
sc->sc_dev.dv_xname, status);
outw(BASE + EP_COMMAND, C_INTR_LATCH);
epreset(sc);
return (1);
}
@ -724,7 +721,6 @@ epintr(sc)
}
/* no more interrupts */
outw(BASE + EP_COMMAND, C_INTR_LATCH);
return (ret);
}