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| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2008-04-28 16:34:35 -0600 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-04-29 03:22:28 -0400 |
| commit | dc16f5f2ede8cc2acf8ac22857a7fecf3a4296c2 (patch) | |
| tree | b4ba965b7c5e1e6011697160aa5346b63afbbbf9 /drivers/pnp/resource.c | |
| parent | dbddd0383c59d588f8db5e773b062756e39117ec (diff) | |
| download | lwn-dc16f5f2ede8cc2acf8ac22857a7fecf3a4296c2.tar.gz lwn-dc16f5f2ede8cc2acf8ac22857a7fecf3a4296c2.zip | |
PNP: make generic pnp_add_dma_resource()
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>
Diffstat (limited to 'drivers/pnp/resource.c')
| -rw-r--r-- | drivers/pnp/resource.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c index 082a556b9dcc..2a8612e31ab7 100644 --- a/drivers/pnp/resource.c +++ b/drivers/pnp/resource.c @@ -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) { |