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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-06-06 18:41:00 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-25 14:31:04 -0700 |
| commit | f8ba3647f30ab22daeb5110453e2dad8a2c1d841 (patch) | |
| tree | 90c9c50be4dd5a6fc1426af05cfdea1171bf6e62 /include/linux/serial_core.h | |
| parent | 4ef03d328769eddbfeca1f1c958fdb181a69c341 (diff) | |
| download | lwn-f8ba3647f30ab22daeb5110453e2dad8a2c1d841.tar.gz lwn-f8ba3647f30ab22daeb5110453e2dad8a2c1d841.zip | |
earlycon: mark earlycon code as __used iif the caller is built-in
Keep earlycon related symbols only when CONFIG_SERIAL_EARLYCON is
enabled and the driver is built-in. This will be helpful to clean
up ifdefs surrounding earlycon code in serial drivers.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index a3d7c0d4a03e..2f44e2013654 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -352,9 +352,15 @@ struct earlycon_id { extern const struct earlycon_id __earlycon_table[]; extern const struct earlycon_id __earlycon_table_end[]; +#if defined(CONFIG_SERIAL_EARLYCON) && !defined(MODULE) +#define EARLYCON_USED_OR_UNUSED __used +#else +#define EARLYCON_USED_OR_UNUSED __maybe_unused +#endif + #define OF_EARLYCON_DECLARE(_name, compat, fn) \ static const struct earlycon_id __UNIQUE_ID(__earlycon_##_name) \ - __used __section(__earlycon_table) \ + EARLYCON_USED_OR_UNUSED __section(__earlycon_table) \ = { .name = __stringify(_name), \ .compatible = compat, \ .setup = fn } |