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Message-Id: <1542084005-16416-1-git-send-email-wang.yi59@zte.com.cn>
Date: Tue, 13 Nov 2018 12:40:05 +0800
From: Yi Wang <wang.yi59@....com.cn>
To: tglx@...utronix.de
Cc: mingo@...hat.com, bp@...en8.de, hpa@...or.com, x86@...nel.org,
pasha.tatashin@...cle.com, wang.yi59@....com.cn,
rajvi.jingar@...el.com, linux-kernel@...r.kernel.org,
zhong.weidong@....com.cn, bp@...e.de
Subject: [PATCH] x86/tsc: Fix -Wmissing-prototypes warning for calibrate_delay_is_known()
We get a warning when building kernel with W=1:
arch/x86/kernel/tsc.c:1497:15: warning: no previous prototype for ‘calibrate_delay_is_known’ [-Wmissing-prototypes]
unsigned long calibrate_delay_is_known(void)
^
Add the missing declaration in head file to fix this.
Signed-off-by: Yi Wang <wang.yi59@....com.cn>
---
arch/x86/include/asm/tsc.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h
index eb5bbfe..8a0c25c 100644
--- a/arch/x86/include/asm/tsc.h
+++ b/arch/x86/include/asm/tsc.h
@@ -35,6 +35,7 @@ static inline cycles_t get_cycles(void)
extern void tsc_early_init(void);
extern void tsc_init(void);
+extern unsigned long calibrate_delay_is_known(void);
extern void mark_tsc_unstable(char *reason);
extern int unsynchronized_tsc(void);
extern int check_tsc_unstable(void);
--
1.8.3.1
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