of: make of_find_device_by_node generic

There's no need for this function to be architecture specific and all four
architectures defining it had the same definition.  The function has been
moved to drivers/of/platform.c.

Signed-off-by: Jonas Bonn <jonas@southpole.se>
[grant.likely@secretlab.ca: moved to drivers/of/platform.c, simplified code, and added kerneldoc comment]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>

3 files changed, 0 insertions, 52 deletions

diff --git a/arch/microblaze/kernel/of_platform.c b/arch/microblaze/kernel/of_platform.c
index c664b275a5fa..6cffadbe2fcd 100644
--- a/arch/microblaze/kernel/of_platform.c
+++ b/arch/microblaze/kernel/of_platform.c
@@ -47,19 +47,3 @@ const struct of_device_id of_default_bus_ids[] = {
         { .type = "simple", },
         {},
 };
-
-static int of_dev_node_match(struct device *dev, void *data)
-{
-        return to_platform_device(dev)->dev.of_node == data;
-}
-
-struct platform_device *of_find_device_by_node(struct device_node *np)
-{
-        struct device *dev;
-
-        dev = bus_find_device(&platform_bus_type, NULL, np, of_dev_node_match);
-        if (dev)
-                return to_platform_device(dev);
-        return NULL;
-}
-EXPORT_SYMBOL(of_find_device_by_node);
diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c
index 84439d1b7cb3..760a7af7fdb5 100644
--- a/arch/powerpc/kernel/of_platform.c
+++ b/arch/powerpc/kernel/of_platform.c
@@ -52,22 +52,6 @@ const struct of_device_id of_default_bus_ids[] = {
         {},
 };
 
-static int of_dev_node_match(struct device *dev, void *data)
-{
-        return to_platform_device(dev)->dev.of_node == data;
-}
-
-struct platform_device *of_find_device_by_node(struct device_node *np)
-{
-        struct device *dev;
-
-        dev = bus_find_device(&platform_bus_type, NULL, np, of_dev_node_match);
-        if (dev)
-                return to_platform_device(dev);
-        return NULL;
-}
-EXPORT_SYMBOL(of_find_device_by_node);
-
 #ifdef CONFIG_PPC_OF_PLATFORM_PCI
 
 /* The probing of PCI controllers from of_platform is currently
diff --git a/arch/sparc/kernel/of_device_common.c b/arch/sparc/kernel/of_device_common.c
index e80729bba028..49ddff56cb04 100644
--- a/arch/sparc/kernel/of_device_common.c
+++ b/arch/sparc/kernel/of_device_common.c
@@ -11,26 +11,6 @@
 
 #include "of_device_common.h"
 
-static int node_match(struct device *dev, void *data)
-{
-        struct platform_device *op = to_platform_device(dev);
-        struct device_node *dp = data;
-
-        return (op->dev.of_node == dp);
-}
-
-struct platform_device *of_find_device_by_node(struct device_node *dp)
-{
-        struct device *dev = bus_find_device(&platform_bus_type, NULL,
-                                             dp, node_match);
-
-        if (dev)
-                return to_platform_device(dev);
-
-        return NULL;
-}
-EXPORT_SYMBOL(of_find_device_by_node);
-
 unsigned int irq_of_parse_and_map(struct device_node *node, int index)
 {
         struct platform_device *op = of_find_device_by_node(node);