linux-kernel - Re: [patch] Fix hpet wrong values

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Date:	Tue, 27 Nov 2007 18:53:22 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Pavel Machek <pavel@....cz>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	kernel list <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [patch] Fix hpet wrong values

On Tue, 27 Nov 2007 13:23:08 +0100 Pavel Machek <pavel@....cz> wrote:

> If hpet is not enabled in config, its init should not pretend to work,
> and people should not try to get time from it. 
> 
> Signed-off-by: Pavel Machek <pavel@...e.cz>
> 
> diff --git a/include/asm-x86/hpet.h b/include/asm-x86/hpet.h
> index b1f3c1e..1777d68 100644
> --- a/include/asm-x86/hpet.h
> +++ b/include/asm-x86/hpet.h
> @@ -81,8 +81,8 @@ #endif /* CONFIG_HPET_EMULATE_RTC */
>  
>  #else
>  
> -static inline int hpet_enable(void) { return 0; }
> -static inline unsigned long hpet_readl(unsigned long a) { return 0; }
> +static inline int hpet_enable(void) { return -ENODEV; }
> +static inline unsigned long hpet_readl(unsigned long a) { BUG(); }
>  
>  #endif /* CONFIG_HPET_TIMER */
>  #endif /* ASM_X86_HPET_H */
> 

Dare I point out Documentation/SubmitChecklist?



include/asm/hpet.h: In function 'hpet_readl':
include/asm/hpet.h:86: warning: no return statement in function returning non-void

just delete it and rely on -Werror-implicit-function-declaration

--- a/include/asm-x86/hpet.h~fix-hpet-wrong-values-fix
+++ a/include/asm-x86/hpet.h
@@ -82,7 +82,6 @@ extern irqreturn_t hpet_rtc_interrupt(in
 #else
 
 static inline int hpet_enable(void) { return -ENODEV; }
-static inline unsigned long hpet_readl(unsigned long a) { BUG(); }
 
 #endif /* CONFIG_HPET_TIMER */
 #endif /* ASM_X86_HPET_H */
_



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