diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2008-04-29 00:33:54 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-04-29 09:22:16 +0200 |
| commit | bda1e4e5a3d976046378cd495a63e1ee0847deec (patch) | |
| tree | d646e0057940116440d8f2c53ea7fc225d97a0a0 /drivers/pnp/core.c | |
| parent | PNP: add pnp_eisa_id_to_string() (diff) | |
| download | linux-bda1e4e5a3d976046378cd495a63e1ee0847deec.tar.xz linux-bda1e4e5a3d976046378cd495a63e1ee0847deec.zip | |
PNP: add pnp_alloc_dev()
Add pnp_alloc_dev() to allocate a struct pnp_dev and fill in the
protocol, instance number, and initial PNP ID. Now it is always
valid to use dev_printk() on any pnp_dev pointer.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-By: Rene Herman <rene.herman@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pnp/core.c')
| -rw-r--r-- | drivers/pnp/core.c | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c index 7d366ca672d3..cf37701a4f9e 100644 --- a/drivers/pnp/core.c +++ b/drivers/pnp/core.c @@ -109,15 +109,42 @@ static void pnp_release_device(struct device *dmdev) kfree(dev); } -int __pnp_add_device(struct pnp_dev *dev) +struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *protocol, int id, char *pnpid) { - int ret; + struct pnp_dev *dev; + struct pnp_id *dev_id; - pnp_fixup_device(dev); + dev = kzalloc(sizeof(struct pnp_dev), GFP_KERNEL); + if (!dev) + return NULL; + + dev->protocol = protocol; + dev->number = id; + dev->dma_mask = DMA_24BIT_MASK; + + dev->dev.parent = &dev->protocol->dev; dev->dev.bus = &pnp_bus_type; dev->dev.dma_mask = &dev->dma_mask; - dev->dma_mask = dev->dev.coherent_dma_mask = DMA_24BIT_MASK; + dev->dev.coherent_dma_mask = dev->dma_mask; dev->dev.release = &pnp_release_device; + + sprintf(dev->dev.bus_id, "%02x:%02x", dev->protocol->number, + dev->number); + + dev_id = pnp_add_id(dev, pnpid); + if (!dev_id) { + kfree(dev); + return NULL; + } + + return dev; +} + +int __pnp_add_device(struct pnp_dev *dev) +{ + int ret; + + pnp_fixup_device(dev); dev->status = PNP_READY; spin_lock(&pnp_lock); list_add_tail(&dev->global_list, &pnp_global); @@ -145,9 +172,6 @@ int pnp_add_device(struct pnp_dev *dev) if (dev->card) return -EINVAL; - dev->dev.parent = &dev->protocol->dev; - sprintf(dev->dev.bus_id, "%02x:%02x", dev->protocol->number, - dev->number); ret = __pnp_add_device(dev); if (ret) return ret; |