linux-kernel - [PATCH] xtensa: annotate dtb_start variable as static _

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Message-ID: <20240918031537.588965-1-masahiroy@kernel.org>
Date: Wed, 18 Sep 2024 12:15:34 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kernel@...r.kernel.org,
	Chris Zankel <chris@...kel.net>,
	Max Filippov <jcmvbkbc@...il.com>
Cc: Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH] xtensa: annotate dtb_start variable as static __initdata

The 'dtb_start' variable is only used within arch/xtensa/kernel/setup.c.
Mark it as 'static'.

It is only used by parse_tag_fdt() and init_arch(), both of which are
annotated as __init. Therefore, dtb_start can be annotated as __initdata,
so it will discarded after boot.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 arch/xtensa/kernel/setup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index bdec4a773af0..3e076b64cc61 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -55,7 +55,7 @@ extern int initrd_below_start_ok;
 #endif
 
 #ifdef CONFIG_USE_OF
-void *dtb_start = __dtb_start;
+static void *dtb_start __initdata = __dtb_start;
 #endif
 
 extern unsigned long loops_per_jiffy;
-- 
2.43.0