PNP: add debug when assigning PNP resources

This patch adds code to dump PNP resources before and after
assigning resources and before writing them to the device.

This is enabled by CONFIG_PNP_DEBUG=y.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c
index e848b794e312..3aeb154e27d6 100644
--- a/drivers/pnp/support.c
+++ b/drivers/pnp/support.c
@@ -51,3 +51,40 @@ void pnp_eisa_id_to_string(u32 id, char *str)
         str[6] = hex_asc((id >>  0) & 0xf);
         str[7] = '\0';
 }
+
+void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc)
+{
+#ifdef DEBUG
+        struct resource *res;
+        int i;
+
+        dev_dbg(&dev->dev, "current resources: %s\n", desc);
+
+        for (i = 0; i < PNP_MAX_IRQ; i++) {
+                res = &dev->res.irq_resource[i];
+                if (!(res->flags & IORESOURCE_UNSET))
+                        dev_dbg(&dev->dev, "  irq %lld flags %#lx\n",
+                                (unsigned long long) res->start, res->flags);
+        }
+        for (i = 0; i < PNP_MAX_DMA; i++) {
+                res = &dev->res.dma_resource[i];
+                if (!(res->flags & IORESOURCE_UNSET))
+                        dev_dbg(&dev->dev, "  dma %lld flags %#lx\n",
+                                (unsigned long long) res->start, res->flags);
+        }
+        for (i = 0; i < PNP_MAX_PORT; i++) {
+                res = &dev->res.port_resource[i];
+                if (!(res->flags & IORESOURCE_UNSET))
+                        dev_dbg(&dev->dev, "  io  %#llx-%#llx flags %#lx\n",
+                                (unsigned long long) res->start,
+                                (unsigned long long) res->end, res->flags);
+        }
+        for (i = 0; i < PNP_MAX_MEM; i++) {
+                res = &dev->res.mem_resource[i];
+                if (!(res->flags & IORESOURCE_UNSET))
+                        dev_dbg(&dev->dev, "  mem %#llx-%#llx flags %#lx\n",
+                                (unsigned long long) res->start,
+                                (unsigned long long) res->end, res->flags);
+        }
+#endif
+}