PNP: make generic pnp_add_io_resource()

Add a pnp_add_io_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, 29 insertions, 0 deletions

diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index 2a8612e31ab7..64387b70026a 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -628,6 +628,35 @@ struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
         return pnp_res;
 }
 
+struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
+                                         resource_size_t start,
+                                         resource_size_t end, int flags)
+{
+        struct pnp_resource *pnp_res;
+        struct resource *res;
+        static unsigned char warned;
+
+        pnp_res = pnp_new_resource(dev, IORESOURCE_IO);
+        if (!pnp_res) {
+                if (!warned) {
+                        dev_err(&dev->dev, "can't add resource for IO "
+                                "%#llx-%#llx\n",(unsigned long long) start,
+                                (unsigned long long) end);
+                        warned = 1;
+                }
+                return NULL;
+        }
+
+        res = &pnp_res->res;
+        res->flags = IORESOURCE_IO | flags;
+        res->start = start;
+        res->end = end;
+
+        dev_dbg(&dev->dev, "  add io  %#llx-%#llx flags %#x\n",
+                (unsigned long long) start, (unsigned long long) end, flags);
+        return pnp_res;
+}
+
 /* format is: pnp_reserve_irq=irq1[,irq2] .... */
 static int __init pnp_setup_reserve_irq(char *str)
 {