Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6

* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6:
  dt: add empty of_machine_is_compatible
  ahci: add DT binding for Calxeda AHCI controller
  dt/platform: minor cleanup
  dt: add empty of_alias_get_id() for non-dt builds

4 files changed, 50 insertions, 12 deletions

diff --git a/Documentation/devicetree/bindings/ata/calxeda-sata.txt b/Documentation/devicetree/bindings/ata/calxeda-sata.txt
new file mode 100644
index 000000000000..79caa5651f53
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/calxeda-sata.txt
@@ -0,0 +1,17 @@
+* Calxeda SATA Controller
+
+SATA nodes are defined to describe on-chip Serial ATA controllers.
+Each SATA controller should have its own node.
+
+Required properties:
+- compatible        : compatible list, contains "calxeda,hb-ahci"
+- interrupts        : <interrupt mapping for SATA IRQ>
+- reg               : <registers mapping>
+
+Example:
+        sata@ffe08000 {
+                compatible = "calxeda,hb-ahci";
+                reg = <0xffe08000 0x1000>;
+                interrupts = <115>;
+        };
+
diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
index c03277d37748..004f2ce3dc73 100644
--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
@@ -202,11 +202,18 @@ static int __devexit ahci_remove(struct platform_device *pdev)
         return 0;
 }
 
+static const struct of_device_id ahci_of_match[] = {
+        { .compatible = "calxeda,hb-ahci", },
+        {},
+};
+MODULE_DEVICE_TABLE(of, ahci_of_match);
+
 static struct platform_driver ahci_driver = {
         .remove = __devexit_p(ahci_remove),
         .driver = {
                 .name = "ahci",
                 .owner = THIS_MODULE,
+                .of_match_table = ahci_of_match,
         },
         .id_table       = ahci_devtype,
 };
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index ed5a6d3c26aa..cbd5d701c7e0 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -310,18 +310,21 @@ static const struct of_dev_auxdata *of_dev_lookup(const struct of_dev_auxdata *l
                                  struct device_node *np)
 {
         struct resource res;
-        if (lookup) {
-                for(; lookup->name != NULL; lookup++) {
-                        if (!of_device_is_compatible(np, lookup->compatible))
-                                continue;
-                        if (of_address_to_resource(np, 0, &res))
-                                continue;
-                        if (res.start != lookup->phys_addr)
-                                continue;
-                        pr_debug("%s: devname=%s\n", np->full_name, lookup->name);
-                        return lookup;
-                }
+
+        if (!lookup)
+                return NULL;
+
+        for(; lookup->name != NULL; lookup++) {
+                if (!of_device_is_compatible(np, lookup->compatible))
+                        continue;
+                if (of_address_to_resource(np, 0, &res))
+                        continue;
+                if (res.start != lookup->phys_addr)
+                        continue;
+                pr_debug("%s: devname=%s\n", np->full_name, lookup->name);
+                return lookup;
         }
+
         return NULL;
 }
 
@@ -329,8 +332,9 @@ static const struct of_dev_auxdata *of_dev_lookup(const struct of_dev_auxdata *l
  * of_platform_bus_create() - Create a device for a node and its children.
  * @bus: device node of the bus to instantiate
  * @matches: match table for bus nodes
- * disallow recursive creation of child buses
+ * @lookup: auxdata table for matching id and platform_data with device nodes
  * @parent: parent for new device, or NULL for top level.
+ * @strict: require compatible property
  *
  * Creates a platform_device for the provided device_node, and optionally
  * recursively create devices for all the child nodes.
diff --git a/include/linux/of.h b/include/linux/of.h
index f01ba8a209c0..0e89aa0bf07a 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -321,6 +321,16 @@ static inline struct device_node *of_parse_phandle(struct device_node *np,
         return NULL;
 }
 
+static inline int of_alias_get_id(struct device_node *np, const char *stem)
+{
+        return -ENOSYS;
+}
+
+static inline int of_machine_is_compatible(const char *compat)
+{
+        return 0;
+}
+
 #define of_match_ptr(_ptr)      NULL
 #define of_match_node(_matches, _node)  NULL
 #endif /* CONFIG_OF */