Re: [PATCH RFC 05/13] of: Add empty for_each_available_child_of_node() macro definition

2012-12-11 Thread Grant Likely
On Mon, 10 Dec 2012 20:41:31 +0100, Sylwester Nawrocki s.nawro...@samsung.com 
wrote:
 Add this empty macro definition so users can be compiled without
 excluding this macro call with preprocessor directives when CONFIG_OF
 is disabled.
 
 Signed-off-by: Sylwester Nawrocki s.nawro...@samsung.com
 Signed-off-by: Kyungmin Park kyungmin.p...@samsung.com

What non-OF code is calling this function?

g.

 ---
  include/linux/of.h |3 +++
  1 file changed, 3 insertions(+)
 
 diff --git a/include/linux/of.h b/include/linux/of.h
 index 2fb0dbe..7df42cc 100644
 --- a/include/linux/of.h
 +++ b/include/linux/of.h
 @@ -332,6 +332,9 @@ static inline bool of_have_populated_dt(void)
  #define for_each_child_of_node(parent, child) \
   while (0)
  
 +#define for_each_available_child_of_node(parent, child) \
 + while (0)
 +
  static inline struct device_node *of_get_child_by_name(
   const struct device_node *node,
   const char *name)
 -- 
 1.7.9.5
 

-- 
Grant Likely, B.Sc, P.Eng.
Secret Lab Technologies, Ltd.
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Re: [PATCH RFC 05/13] of: Add empty for_each_available_child_of_node() macro definition

2012-12-11 Thread Sylwester Nawrocki
On 12/11/2012 09:57 AM, Grant Likely wrote:
 On Mon, 10 Dec 2012 20:41:31 +0100, Sylwester Nawrocki 
 s.nawro...@samsung.com wrote:
 Add this empty macro definition so users can be compiled without
 excluding this macro call with preprocessor directives when CONFIG_OF
 is disabled.

 Signed-off-by: Sylwester Nawrocki s.nawro...@samsung.com
 Signed-off-by: Kyungmin Park kyungmin.p...@samsung.com
 
 What non-OF code is calling this function?

It is used in a driver [1] in an OF specific function. The patch is
in my second series that depends this one.
[PATCH RFC 00/12] Device tree support for Exynos4 SoC camera drivers

I thought it was better to add this empty macro definition rather
than using #ifdef CONFIG_OF in the code. However, in this case
the local variables would remain unused, so it's not really any
good solution. It just looked cumbersome to me to have in the code
something like

#ifdef CONFIG_OF
int func(void)
{
int x;

return x;
}   
#else
#define func() (-ENOSYS)
#endif

After all it's not that bad and allows to compile out all OF code
when it's unused.

Please ignore patches 05..07/13, I'll drop them in next iteration.
And sorry for the noise.

[1] http://patchwork.linuxtv.org/patch/15852/

 ---
  include/linux/of.h |3 +++
  1 file changed, 3 insertions(+)

 diff --git a/include/linux/of.h b/include/linux/of.h
 index 2fb0dbe..7df42cc 100644
 --- a/include/linux/of.h
 +++ b/include/linux/of.h
 @@ -332,6 +332,9 @@ static inline bool of_have_populated_dt(void)
  #define for_each_child_of_node(parent, child) \
  while (0)
  
 +#define for_each_available_child_of_node(parent, child) \
 +while (0)
 +
  static inline struct device_node *of_get_child_by_name(
  const struct device_node *node,
  const char *name)
 -- 
 1.7.9.5

Thanks,
Sylwester

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[PATCH RFC 05/13] of: Add empty for_each_available_child_of_node() macro definition

2012-12-10 Thread Sylwester Nawrocki
Add this empty macro definition so users can be compiled without
excluding this macro call with preprocessor directives when CONFIG_OF
is disabled.

Signed-off-by: Sylwester Nawrocki s.nawro...@samsung.com
Signed-off-by: Kyungmin Park kyungmin.p...@samsung.com
---
 include/linux/of.h |3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/of.h b/include/linux/of.h
index 2fb0dbe..7df42cc 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -332,6 +332,9 @@ static inline bool of_have_populated_dt(void)
 #define for_each_child_of_node(parent, child) \
while (0)
 
+#define for_each_available_child_of_node(parent, child) \
+   while (0)
+
 static inline struct device_node *of_get_child_by_name(
const struct device_node *node,
const char *name)
-- 
1.7.9.5

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