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    Subject[patch 38/53] PNP: add pnp_new_resource() to find a new unset pnp_resource
    This encapsulates the code to locate a new pnp_resource of the
    desired type. Currently this uses the pnp_resource_table, but
    it will soon change to find a resource in a linked list.

    Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>

    Index: work8/drivers/pnp/resource.c
    ===================================================================
    --- work8.orig/drivers/pnp/resource.c 2008-04-17 15:04:41.000000000 -0600
    +++ work8/drivers/pnp/resource.c 2008-04-18 11:08:33.000000000 -0600
    @@ -516,6 +516,49 @@
    }
    EXPORT_SYMBOL(pnp_get_resource);

    +static struct pnp_resource *pnp_new_resource(struct pnp_dev *dev, int type)
    +{
    + struct pnp_resource *pnp_res;
    + struct resource *res;
    + int i;
    +
    + switch (type) {
    + case IORESOURCE_IO:
    + for (i = 0; i < PNP_MAX_PORT; i++) {
    + pnp_res = &dev->res->port[i];
    + res = &pnp_res->res;
    + if (res->flags & IORESOURCE_UNSET)
    + return pnp_res;
    + }
    + break;
    + case IORESOURCE_MEM:
    + for (i = 0; i < PNP_MAX_MEM; i++) {
    + pnp_res = &dev->res->mem[i];
    + res = &pnp_res->res;
    + if (res->flags & IORESOURCE_UNSET)
    + return pnp_res;
    + }
    + break;
    + case IORESOURCE_IRQ:
    + for (i = 0; i < PNP_MAX_IRQ; i++) {
    + pnp_res = &dev->res->irq[i];
    + res = &pnp_res->res;
    + if (res->flags & IORESOURCE_UNSET)
    + return pnp_res;
    + }
    + break;
    + case IORESOURCE_DMA:
    + for (i = 0; i < PNP_MAX_DMA; i++) {
    + pnp_res = &dev->res->dma[i];
    + res = &pnp_res->res;
    + if (res->flags & IORESOURCE_UNSET)
    + return pnp_res;
    + }
    + break;
    + }
    + return NULL;
    +}
    +
    /* format is: pnp_reserve_irq=irq1[,irq2] .... */
    static int __init pnp_setup_reserve_irq(char *str)
    {
    --


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