linux-kernel - [PATCH] only call the c function set_bios_mode if the value CONFIG_X86

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Message-Id: <20220219203950.106655-1-hwe.kernel@gmail.com>
Date:   Sat, 19 Feb 2022 21:39:50 +0100
From:   Hans Weber <hwe.kernel@...il.com>
To:     torvalds@....osdl.org
Cc:     linux-kernel@...r.kernel.org, Hans Weber <hwe.kernel@...il.com>
Subject: [PATCH] only call the c function set_bios_mode if the value CONFIG_X86_64 is set.

Signed-off-by: Hans Weber <hwe.kernel@...il.com>
---
 arch/x86/boot/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/boot/main.c b/arch/x86/boot/main.c
index e3add857c2c9..e4df8ff1e228 100644
--- a/arch/x86/boot/main.c
+++ b/arch/x86/boot/main.c
@@ -102,14 +102,12 @@ static void query_ist(void)
  */
 static void set_bios_mode(void)
 {
-#ifdef CONFIG_X86_64
 	struct biosregs ireg;

 	initregs(&ireg);
 	ireg.ax = 0xec00;
 	ireg.bx = 2;
 	intcall(0x15, &ireg, NULL);
-#endif
 }

 static void init_heap(void)
@@ -152,7 +150,9 @@ void main(void)
 	}

 	/* Tell the BIOS what CPU mode we intend to run in. */
+#ifdef CONFIG_X86_64
 	set_bios_mode();
+#endif

 	/* Detect memory layout */
 	detect_memory();
-- 
2.30.2