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If bus_dmamap_create() fails, free the DMA channel.

This commit is contained in:
mycroft 1999-03-22 07:06:09 +00:00
parent 2343b503e6
commit ee5f90d04c
1 changed files with 9 additions and 3 deletions
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12
sys/dev/isa/isadma.c
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@ -1,4 +1,4 @@
/* $NetBSD: isadma.c,v 1.41 1999/02/22 02:33:48 mycroft Exp $ */
/* $NetBSD: isadma.c,v 1.42 1999/03/22 07:06:09 mycroft Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
@ -245,6 +245,7 @@ _isa_dmamap_create(ids, chan, size, flags)
int flags;
{
bus_size_t maxsize;
int error;
if (chan < 0 || chan > 7) {
printf("%s: bogus drq %d\n", ids->ids_dev->dv_xname, chan);
@ -267,8 +268,13 @@ _isa_dmamap_create(ids, chan, size, flags)
ISA_DMA_DRQ_ALLOC(ids, chan);
return (bus_dmamap_create(ids->ids_dmat, size, 1, size, maxsize,
flags, &ids->ids_dmamaps[chan]));
error = bus_dmamap_create(ids->ids_dmat, size, 1, size, maxsize,
flags, &ids->ids_dmamaps[chan]);
if (error)
ISA_DMA_DRQ_FREE(ids, chan);
return (error);
}
void