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kconfig: fix MODULES-related bug in case of no .config 

There seems to be a kconfig bug due to MODULES not always being
evaluated if no .config is found. Take the following Kconfig as an
example:

config MODULES
	def_bool y

config FOO
	def_tristate m

With no .config, the following configuration is generated:

CONFIG_MODULES=y
CONFIG_FOO=y

With an empty .config, the following:

CONFIG_MODULES=y
CONFIG_FOO=m

Tristate choice statements can also exhibit the problem, due to having an
implicit rev_dep (select) containing "m".

The problem is that MODULES is never evaluted in conf_read_simple() unless
there's a .config. The following patch fixes this.

Signed-off-by: Ulf Magnusson <ulfalizer.lkml@gmail.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Ulf Magnusson 2010-07-27 21:57:43 +02:00 committed by Michal Marek
parent 1244b41d00
commit ac1ffde1ba
1 changed files with 4 additions and 1 deletions
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5
scripts/kconfig/confdata.c
View File

@ -170,8 +170,11 @@ int conf_read_simple(const char *name, int def)
if (in)
goto load;
sym_add_change_count(1);
if (!sym_defconfig_list)
if (!sym_defconfig_list) {
if (modules_sym)
sym_calc_value(modules_sym);
return 1;
}
for_all_defaults(sym_defconfig_list, prop) {
if (expr_calc_value(prop->visible.expr) == no ||