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Return NULL when trying to establish a non-EDGE_TRIGGERED interrupt.

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This can be used by drivers to choose another type. Currently used in
isnd4bsd.
This commit is contained in:
leo 1999-01-08 09:29:17 +00:00
parent be84171b70
commit c754d06437
1 changed files with 7 additions and 2 deletions
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9
sys/arch/atari/isa/isa_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: isa_machdep.c,v 1.11 1998/11/26 13:34:23 leo Exp $ */
/* $NetBSD: isa_machdep.c,v 1.12 1999/01/08 09:29:17 leo Exp $ */
/*
* Copyright (c) 1997 Leo Weppelman. All rights reserved.
@ -159,7 +159,6 @@ int sr;
* We're running at a too high priority now.
*/
add_sicallback((si_farg)iifun, (void*)slot, 0);
isa_delayed++;
}
else {
s = splx(iinfo_p->ipl);
@ -193,6 +192,12 @@ isa_intr_establish(ic, irq, type, level, ih_fun, ih_arg)
struct intrhand *ihand;
int slot;
/*
* The Hades only supports edge triggered interrupts!
*/
if (type != IST_EDGE)
return NULL;
slot = (irq <= 6) ? 0 : 1;
iinfo_p = &iinfo[slot];