4.4-stable review patch. If anyone has any objections, please let me know.
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From: Masahiro Yamada yamada.masahiro@socionext.com
commit 4f920843d248946545415c1bf6120942048708ed upstream.
The macro MODULE is not a config option, it is a per-file build option. So, config_enabled(MODULE) is not sensible. (There is another case in include/linux/export.h, where config_enabled() is used against a non-config option.)
This commit renames some macros in include/linux/kconfig.h for the use for non-config macros and replaces config_enabled(MODULE) with __is_defined(MODULE).
I am keeping config_enabled() because it is still referenced from some places, but I expect it would be deprecated in the future.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com Signed-off-by: Michal Marek mmarek@suse.com Signed-off-by: Razvan Ghitulete rga@amazon.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- include/linux/kconfig.h | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
--- a/include/linux/kconfig.h +++ b/include/linux/kconfig.h @@ -17,10 +17,11 @@ * the last step cherry picks the 2nd arg, we get a zero. */ #define __ARG_PLACEHOLDER_1 0, -#define config_enabled(cfg) _config_enabled(cfg) -#define _config_enabled(value) __config_enabled(__ARG_PLACEHOLDER_##value) -#define __config_enabled(arg1_or_junk) ___config_enabled(arg1_or_junk 1, 0) -#define ___config_enabled(__ignored, val, ...) val +#define config_enabled(cfg) ___is_defined(cfg) +#define __is_defined(x) ___is_defined(x) +#define ___is_defined(val) ____is_defined(__ARG_PLACEHOLDER_##val) +#define ____is_defined(arg1_or_junk) __take_second_arg(arg1_or_junk 1, 0) +#define __take_second_arg(__ignored, val, ...) val
/* * IS_BUILTIN(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y', 0 @@ -42,7 +43,7 @@ * built-in code when CONFIG_FOO is set to 'm'. */ #define IS_REACHABLE(option) (config_enabled(option) || \ - (config_enabled(option##_MODULE) && config_enabled(MODULE))) + (config_enabled(option##_MODULE) && __is_defined(MODULE)))
/* * IS_ENABLED(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'y' or 'm',