linux-kernel - [PATCH 10/12] serial_core: declare __earlycon_table{,

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Message-Id: <20161016151616.31451-11-vegard.nossum@oracle.com>
Date:   Sun, 16 Oct 2016 17:16:14 +0200
From:   Vegard Nossum <vegard.nossum@...cle.com>
To:     linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Jiri Slaby <jslaby@...e.cz>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "Luis R . Rodriguez" <mcgrof@...nel.org>,
        Vegard Nossum <vegard.nossum@...cle.com>,
        Peter Hurley <peter@...leysoftware.com>
Subject: [PATCH 10/12] serial_core: declare __earlycon_table{,_end} as external array

Cc: Peter Hurley <peter@...leysoftware.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Vegard Nossum <vegard.nossum@...cle.com>
---
 drivers/of/fdt.c                  | 2 +-
 drivers/tty/serial/earlycon.c     | 2 +-
 include/asm-generic/vmlinux.lds.h | 8 ++++----
 include/linux/serial_core.h       | 4 ++--
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index c89d5d2..eb41e3d 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -956,7 +956,7 @@ int __init early_init_dt_scan_chosen_stdout(void)
 		return 0;
 	}
 
-	for (match = __earlycon_table; match < __earlycon_table_end; match++) {
+	ext_for_each(match, earlycon_table) {
 		if (!match->compatible[0])
 			continue;
 
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index c365154..f49cfed 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -180,7 +180,7 @@ int __init setup_earlycon(char *buf)
 	if (early_con.flags & CON_ENABLED)
 		return -EALREADY;
 
-	for (match = __earlycon_table; match < __earlycon_table_end; match++) {
+	ext_for_each(match, earlycon_table) {
 		size_t len = strlen(match->name);
 
 		if (strncmp(buf, match->name, len))
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index d6121ac..342c2dd 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -154,10 +154,10 @@
 #endif
 
 #ifdef CONFIG_SERIAL_EARLYCON
-#define EARLYCON_TABLE() STRUCT_ALIGN();			\
-			 VMLINUX_SYMBOL(__earlycon_table) = .;	\
-			 *(__earlycon_table)			\
-			 VMLINUX_SYMBOL(__earlycon_table_end) = .;
+#define EARLYCON_TABLE() STRUCT_ALIGN();				\
+			 VMLINUX_SYMBOL(__start_earlycon_table) = .;	\
+			 *(__earlycon_table)				\
+			 VMLINUX_SYMBOL(__stop_earlycon_table) = .;
 #else
 #define EARLYCON_TABLE()
 #endif
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 3442014..2d35e87 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -22,6 +22,7 @@
 
 
 #include <linux/compiler.h>
+#include <linux/extarray.h>
 #include <linux/interrupt.h>
 #include <linux/circ_buf.h>
 #include <linux/spinlock.h>
@@ -349,8 +350,7 @@ struct earlycon_id {
 	int	(*setup)(struct earlycon_device *, const char *options);
 } __aligned(32);
 
-extern const struct earlycon_id __earlycon_table[];
-extern const struct earlycon_id __earlycon_table_end[];
+DECLARE_EXTARRAY(const struct earlycon_id, earlycon_table);
 
 #if defined(CONFIG_SERIAL_EARLYCON) && !defined(MODULE)
 #define EARLYCON_USED_OR_UNUSED	__used
-- 
2.10.0.479.g221bd91