[PATCH] of: Provide static inline function for of_translate_address if needed

From: Guenter Roeck
Date: Fri Nov 06 2015 - 22:28:32 EST

If OF_ADDRESS is not configured, builds can fail with errors such as

In function 'hns_mdio_bus_name':
error: implicit declaration of function 'of_translate_address'

as currently seen when building sparc:allmodconfig.

Introduce a static inline function if OF_ADDRESS is not configured to fix
the build failure. Return OF_BAD_ADDR in this case. For this to work, the
definition of OF_BAD_ADDR has to be moved outside CONFIG_OF conditional

Fixes: 876133d3161d ("net: hisilicon: add OF dependency")
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
include/linux/of.h | 4 ++--
include/linux/of_address.h | 7 +++++++
2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/include/linux/of.h b/include/linux/of.h
index 2194b8ca41f9..dd10626a615f 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -126,6 +126,8 @@ extern raw_spinlock_t devtree_lock;
#define OF_POPULATED 3 /* device already created for the node */
#define OF_POPULATED_BUS 4 /* of_platform_populate recursed to children of this node */

+#define OF_BAD_ADDR ((u64)-1)
#ifdef CONFIG_OF
void of_core_init(void);

@@ -229,8 +231,6 @@ static inline unsigned long of_read_ulong(const __be32 *cell, int size)
#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)

-#define OF_BAD_ADDR ((u64)-1)
static inline const char *of_node_full_name(const struct device_node *np)
return np ? np->full_name : "<no-node>";
diff --git a/include/linux/of_address.h b/include/linux/of_address.h
index d88e81be6368..507daad0bc8d 100644
--- a/include/linux/of_address.h
+++ b/include/linux/of_address.h
@@ -57,6 +57,13 @@ extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
u64 *paddr, u64 *size);
extern bool of_dma_is_coherent(struct device_node *np);
+static inline u64 of_translate_address(struct device_node *np,
+ const __be32 *addr)
+ return OF_BAD_ADDR;
static inline struct device_node *of_find_matching_node_by_address(
struct device_node *from,
const struct of_device_id *matches,

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