PNP: make generic pnp_add_irq_resource()

Add a pnp_add_irq_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>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index 1f4134eea7b7..082a556b9dcc 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -576,6 +576,32 @@ static struct pnp_resource *pnp_new_resource(struct pnp_dev *dev, int type)
         return NULL;
 }
 
+struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
+                                          int flags)
+{
+        struct pnp_resource *pnp_res;
+        struct resource *res;
+        static unsigned char warned;
+
+        pnp_res = pnp_new_resource(dev, IORESOURCE_IRQ);
+        if (!pnp_res) {
+                if (!warned) {
+                        dev_err(&dev->dev, "can't add resource for IRQ %d\n",
+                                irq);
+                        warned = 1;
+                }
+                return NULL;
+        }
+
+        res = &pnp_res->res;
+        res->flags = IORESOURCE_IRQ | flags;
+        res->start = irq;
+        res->end = irq;
+
+        dev_dbg(&dev->dev, "  add irq %d flags %#x\n", irq, flags);
+        return pnp_res;
+}
+
 /* format is: pnp_reserve_irq=irq1[,irq2] .... */
 static int __init pnp_setup_reserve_irq(char *str)
 {