提交 00b2c76a 编写于 作者: D David Howells 提交者: Linus Torvalds

include/linux/of.h: make for_each_child_of_node() reference its args when CONFIG_OF=n

Make for_each_child_of_node() reference its args when CONFIG_OF=n to
avoid warnings like:

	drivers/leds/leds-pwm.c:88:22: warning: unused variable 'node' [-Wunused-variable]
	  struct device_node *node = pdev->dev.of_node;
			      ^
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 04f9b74e
......@@ -377,8 +377,13 @@ static inline bool of_have_populated_dt(void)
return false;
}
/* Kill an unused variable warning on a device_node pointer */
static inline void __of_use_dn(const struct device_node *np)
{
}
#define for_each_child_of_node(parent, child) \
while (0)
while (__of_use_dn(parent), __of_use_dn(child), 0)
#define for_each_available_child_of_node(parent, child) \
while (0)
......
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