Subject: Re: linux-next: build failure after merge of the final tree (pm tree related)

From: "Rafael J. Wysocki" <[email-masked]>
Date: Wed, 24 Oct 2012 23:40:48 +0200

On Wednesday 24 of October 2012 14:44:00 Stephen Rothwell wrote:
> Hi all,
> 
> After merging the final tree, today's linux-next build (powerpc
> allnoconfig) failed like this:
> 
> In file included from arch/powerpc/kernel/idle.c:27:0:
> include/linux/tick.h: In function 'menu_hrtimer_cancel':
> include/linux/tick.h:148:48: error: 'return' with a value, in function returning void [-Werror]
> 
> Several of these :-(

Sorry for the breakage, it shoule be fixed now.

Thanks,
Rafael

> Caused by commit 25d77b76d7ae ("cpuidle: Quickly notice prediction
> failure for repeat mode") from the pm tree.  This build has
> CONFIG_CPU_IDLE_GOV_MENU turned off.  For changes that are obviously
> affected by CONFIG options, please test build with the CONFIG option on
> and off.
> 
> I have applied the following patch for today:
> 
> From: Stephen Rothwell <[email-masked]>
> Date: Wed, 24 Oct 2012 14:40:47 +1100
> Subject: [PATCH] cpuidle: fix up but return type for inline function
> 
> Fixes this error when CONFIG_CPU_IDLE_GOV_MENU is not enabled:
> 
> In file included from arch/powerpc/kernel/idle.c:27:0:
> include/linux/tick.h: In function 'menu_hrtimer_cancel':
> include/linux/tick.h:148:48: error: 'return' with a value, in function returning void [-Werror]
> 
> Signed-off-by: Stephen Rothwell <[email-masked]>
> ---
>  include/linux/tick.h |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/tick.h b/include/linux/tick.h
> index 8867424..40d123e 100644
> --- a/include/linux/tick.h
> +++ b/include/linux/tick.h
> @@ -145,7 +145,7 @@ static inline u64 get_cpu_iowait_time_us(int cpu, u64 *unused) { return -1; }
>  # ifdef CONFIG_CPU_IDLE_GOV_MENU
>  extern void menu_hrtimer_cancel(void);
>  # else
> -static inline void menu_hrtimer_cancel(void) { return -1; }
> +static inline void menu_hrtimer_cancel(void) { }
>  # endif /* CONFIG_CPU_IDLE_GOV_MENU */
>  
>  #endif
> 
-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.