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author | Masahiro Yamada <masahiroy@kernel.org> | 2024-04-22 19:41:04 +0300 |
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committer | Masahiro Yamada <masahiroy@kernel.org> | 2024-05-02 13:48:26 +0300 |
commit | 6a1215888e23aa9fbc514086402f04708c84f454 (patch) | |
tree | 354f1463af09a8daa3dd80b459265148f183a414 /scripts/kconfig/tests/choice/oldask0_expected_stdout | |
parent | d9a1dab65aa2d4de7244731c97c70491997225f2 (diff) | |
download | linux-6a1215888e23aa9fbc514086402f04708c84f454.tar.xz |
kconfig: remove 'optional' property support
The 'choice' statement is primarily used to exclusively select one
option, but the 'optional' property allows all entries to be disabled.
In the following example, both A and B can be disabled simultaneously:
choice
prompt "choose A, B, or nothing"
optional
config A
bool "A"
config B
bool "B"
endchoice
You can achieve the equivalent outcome by other means.
A common solution is to add another option to guard the choice block.
In the following example, you can set ENABLE_A_B_CHOICE=n to disable
the entire choice block:
choice
prompt "choose A or B"
depends on ENABLE_A_B_CHOICE
config A
bool "A"
config B
bool "B"
endchoice
Another approach is to insert one more entry:
choice
prompt "choose A, B, or disable both"
config A
bool "A"
config B
bool "B"
config DISABLE_A_AND_B
bool "choose this to disable both A and B"
endchoice
Some real examples are DEBUG_INFO_NONE, INITRAMFS_COMPRESSION_NONE,
LTO_NONE, etc.
The 'optional' property is even more unnecessary for a tristate choice.
Without the 'optional' property, you can disable A and B; you can set
'm' in the choice prompt, and disable A and B individually:
choice
prompt "choose one built-in or make them modular"
config A
tristate "A"
config B
tristate "B"
endchoice
In conclusion, the 'optional' property was unneeded.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Diffstat (limited to 'scripts/kconfig/tests/choice/oldask0_expected_stdout')
-rw-r--r-- | scripts/kconfig/tests/choice/oldask0_expected_stdout | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/scripts/kconfig/tests/choice/oldask0_expected_stdout b/scripts/kconfig/tests/choice/oldask0_expected_stdout index b251bba9698b..d2257db46423 100644 --- a/scripts/kconfig/tests/choice/oldask0_expected_stdout +++ b/scripts/kconfig/tests/choice/oldask0_expected_stdout @@ -3,8 +3,6 @@ boolean choice 1. choice 0 (BOOL_CHOICE0) (NEW) > 2. choice 1 (BOOL_CHOICE1) (NEW) choice[1-2?]: -optional boolean choice [N/y/?] (NEW) tristate choice [M/y/?] (NEW) choice 0 (TRI_CHOICE0) [N/m/?] (NEW) choice 1 (TRI_CHOICE1) [N/m/?] (NEW) -optional tristate choice [N/m/y/?] (NEW) |