diff mbox

[1/4] earlycon: mark earlycon code as __used iif the caller is built-in

Message ID 1465206063-1018-2-git-send-email-yamada.masahiro@socionext.com
State Accepted
Commit f8ba3647f30ab22daeb5110453e2dad8a2c1d841
Headers show

Commit Message

Masahiro Yamada June 6, 2016, 9:41 a.m. UTC 
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>

---

 include/linux/serial_core.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-serial" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index a3d7c0d..2f44e20 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  }