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Subject[PATCH] devicetree: Add empty of_platform_populate() for !CONFIG_OF_ADDRESS (sparc)
Date
Sparc has its own helpers for translating address ranges when the device
tree is parsed at boot time, and it isn't able to use of_platform_populate().
However, there are some device drivers that want to use that function on
other DT enabled platforms (ie. TWL4030). This patch adds an empty
of_platform_populate() implementation that returns an error when
CONFIG_OF_ADDRESS is not selected.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
---
drivers/mfd/twl-core.c | 5 ++---
drivers/of/platform.c | 4 ++--
include/linux/of_platform.h | 12 ++++++++++--
3 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 66f9bff..4970d43 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -1305,11 +1305,10 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
}

-#ifdef CONFIG_OF_DEVICE
+ status = -ENODEV;
if (node)
status = of_platform_populate(node, NULL, NULL, &client->dev);
- else
-#endif
+ if (status)
status = add_children(pdata, id->driver_data);

fail:
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 63b3ec4..20fbebd 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -55,7 +55,7 @@ EXPORT_SYMBOL(of_find_device_by_node);
#include <asm/dcr.h>
#endif

-#if !defined(CONFIG_SPARC)
+#ifdef CONFIG_OF_ADDRESS
/*
* The following routines scan a subtree and registers a device for
* each applicable node.
@@ -462,4 +462,4 @@ int of_platform_populate(struct device_node *root,
of_node_put(root);
return rc;
}
-#endif /* !CONFIG_SPARC */
+#endif /* CONFIG_OF_ADDRESS */
diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h
index 040ce2f..242fa35 100644
--- a/include/linux/of_platform.h
+++ b/include/linux/of_platform.h
@@ -81,7 +81,7 @@ extern struct platform_device *of_device_alloc(struct device_node *np,
struct device *parent);
extern struct platform_device *of_find_device_by_node(struct device_node *np);

-#if !defined(CONFIG_SPARC) /* SPARC has its own device registration method */
+#ifdef CONFIG_OF_ADDRESS /* device reg helpers depend on OF_ADDRESS */
/* Platform devices and busses creation */
extern struct platform_device *of_platform_device_create(struct device_node *np,
const char *bus_id,
@@ -94,7 +94,15 @@ extern int of_platform_populate(struct device_node *root,
const struct of_device_id *matches,
const struct of_dev_auxdata *lookup,
struct device *parent);
-#endif /* !CONFIG_SPARC */
+#else
+static inline int of_platform_populate(struct device_node *root,
+ const struct of_device_id *matches,
+ const struct of_dev_auxdata *lookup,
+ struct device *parent)
+{
+ return -ENODEV;
+}
+#endif /* !CONFIG_OF_ADDRESS */

#endif /* CONFIG_OF_DEVICE */

--
1.7.9


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