To prevent of_platform_populate() from trying to populate duplicate
devices if a device has been already populated.
Signed-off-by: Hiroshi Doyu <hdoyu@xxxxxxxxxx>
---
drivers/of/platform.c | 6 ++++++
include/linux/of.h | 1 +
2 files changed, 7 insertions(+)
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 9b439ac..994cea4 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -208,6 +208,11 @@ static struct platform_device *of_platform_device_create_pdata(
if (!of_device_is_available(np))
return NULL;
+ if (np->dev) {
+ dev_info(np->dev, "Already populated\n");
+ return to_platform_device(np->dev);
+ }
+
dev = of_device_alloc(np, bus_id, parent);
if (!dev)
return NULL;
@@ -232,6 +237,7 @@ static struct platform_device *of_platform_device_create_pdata(
return NULL;
}
+ np->dev = &dev->dev;
return dev;
}
diff --git a/include/linux/of.h b/include/linux/of.h
index f95aee3..638a88a 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -60,6 +60,7 @@ struct device_node {
struct kref kref;
unsigned long _flags;
void *data;
+ struct device *dev; /* Set only after populated */
#if defined(CONFIG_SPARC)
const char *path_component_name;
unsigned int unique_id;
--
1.8.1.5
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