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PNP: make generic pnp_add_dma_resource()

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Add a pnp_add_dma_resource() that can be used by all the PNP
backends.  This consolidates a little more pnp_resource_table
knowledge into one place.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas
2008-04-28 16:34:35 -06:00
committed by Len Brown
parent dbddd0383c
commit dc16f5f2ed
6 changed files with 47 additions and 72 deletions
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26
drivers/pnp/resource.c
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@@ -602,6 +602,32 @@ struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
return pnp_res;
}
struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
int flags)
{
struct pnp_resource *pnp_res;
struct resource *res;
static unsigned char warned;
pnp_res = pnp_new_resource(dev, IORESOURCE_DMA);
if (!pnp_res) {
if (!warned) {
dev_err(&dev->dev, "can't add resource for DMA %d\n",
dma);
warned = 1;
}
return NULL;
}
res = &pnp_res->res;
res->flags = IORESOURCE_DMA | flags;
res->start = dma;
res->end = dma;
dev_dbg(&dev->dev, " add dma %d flags %#x\n", dma, flags);
return pnp_res;
}
/* format is: pnp_reserve_irq=irq1[,irq2] .... */
static int __init pnp_setup_reserve_irq(char *str)
{