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Use M_NOWAIT instead of M_WAITOK when allocating dmamaps; the allocations

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functions may be called from a device strategy routine when sleeping is
bad.

Submitted by:	phk
Reviewed by:	tmm
This commit is contained in:
Jake Burkholder 2002-10-01 00:17:39 +00:00
parent a88b260a86
commit c7f73b67b5
1 changed files with 7 additions and 4 deletions
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11
sys/sparc64/sparc64/bus_machdep.c
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@ -268,9 +268,12 @@ nexus_dmamap_create(bus_dma_tag_t pdmat, bus_dma_tag_t ddmat, int flags,
{
/* Not much to do...? */
*mapp = malloc(sizeof(**mapp), M_DEVBUF, M_WAITOK | M_ZERO);
ddmat->map_count++;
return (0);
*mapp = malloc(sizeof(**mapp), M_DEVBUF, M_NOWAIT | M_ZERO);
if (*mapp != NULL) {
ddmat->map_count++;
return (0);
} else
return (ENOMEM);
}
/*
@ -422,7 +425,7 @@ int
sparc64_dmamem_alloc_map(bus_dma_tag_t dmat, bus_dmamap_t *mapp)
{
*mapp = malloc(sizeof(**mapp), M_DEVBUF, M_WAITOK | M_ZERO);
*mapp = malloc(sizeof(**mapp), M_DEVBUF, M_NOWAIT | M_ZERO);
if (*mapp == NULL)
return (ENOMEM);