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of_net.h: Provide empty functions if OF_NET is not configured

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of_get_mac_address() and of_get_phy_mode() are only provided if OF_NET
is configured. While most callers check for the define, not all do, and those
who do require #ifdef around the code. For those who don't, the missing check
can result in errors such as

arch/powerpc/sysdev/tsi108_dev.c:107:3: error: implicit declaration of
	function 'of_get_mac_address' [-Werror=implicit-function-declaration]
arch/powerpc/sysdev/mv64x60_dev.c:253:2: error: implicit declaration of
	function 'of_get_mac_address' [-Werror=implicit-function-declaration]

Provide empty functions if OF_NET is not configured.
This is safe because all callers do check the return values.

Cc: David Daney <david.daney@cavium.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2013-04-02 09:35:07 +00:00 committed by David S. Miller
parent 5e404cd658
commit 65b3841b9c
1 changed files with 10 additions and 0 deletions
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10
include/linux/of_net.h
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@ -11,6 +11,16 @@
#include <linux/of.h>
extern const int of_get_phy_mode(struct device_node *np);
extern const void *of_get_mac_address(struct device_node *np);
#else
static inline const int of_get_phy_mode(struct device_node *np)
{
return -ENODEV;
}
static inline const void *of_get_mac_address(struct device_node *np)
{
return NULL;
}
#endif
#endif /* __LINUX_OF_NET_H */