RE: linux-next: build failure after merge of the final tree (pmtree related)

[Song, Youquan]

Yes. We already do the patch to fix the warning yesterday after get the information from Fengguang's "0-DAY kernel build testing".  But do not refresh linux-next so quickly.
Thanks for the information and patch, Stephen!

-Youquan

-----Original Message-----
From: Stephen Rothwell [mailto:sfr@xxxxxxxxxxxxxxxx] 
Sent: Wednesday, October 24, 2012 11:44 AM
To: Rafael J. Wysocki
Cc: linux-next@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Song, Youquan; Rik van Riel
Subject: linux-next: build failure after merge of the final tree (pm tree related)

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 :-(

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 <sfr@xxxxxxxxxxxxxxxx>
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 <sfr@xxxxxxxxxxxxxxxx>
---
 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
--
1.7.10.280.gaa39

--
Cheers,
Stephen Rothwell                    sfr@xxxxxxxxxxxxxxxx
--
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