linux-kernel - [PATCH] sched: Fix compiler warnings

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Date:	Thu, 12 Jun 2014 16:08:13 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	linux-kernel@...r.kernel.org
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Vincent Guittot <vincent.guittot@...aro.org>
Subject: [PATCH] sched: Fix compiler warnings

Commit 143e1e28cb (sched: Rework sched_domain topology definition)
introduced a number of functions with a return value of 'const int'.
gcc doesn't know what to do with that and, if the kernel is compiled
with W=1, complains with the following warnings whenever sched.h
is included.

include/linux/sched.h:875:25: warning:
	type qualifiers ignored on function return type
include/linux/sched.h:882:25: warning:
	type qualifiers ignored on function return type
include/linux/sched.h:889:25: warning:
	type qualifiers ignored on function return type
include/linux/sched.h:1002:21: warning:
	type qualifiers ignored on function return type

Drop 'const' from the function declarations to fix the problem.

Cc: Vincent Guittot <vincent.guittot@...aro.org>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 include/linux/sched.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/linux/sched.h b/include/linux/sched.h
index ea74596..65046b3 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -872,21 +872,21 @@ enum cpu_idle_type {
 #define SD_NUMA			0x4000	/* cross-node balancing */
 
 #ifdef CONFIG_SCHED_SMT
-static inline const int cpu_smt_flags(void)
+static inline int cpu_smt_flags(void)
 {
 	return SD_SHARE_CPUPOWER | SD_SHARE_PKG_RESOURCES;
 }
 #endif
 
 #ifdef CONFIG_SCHED_MC
-static inline const int cpu_core_flags(void)
+static inline int cpu_core_flags(void)
 {
 	return SD_SHARE_PKG_RESOURCES;
 }
 #endif
 
 #ifdef CONFIG_NUMA
-static inline const int cpu_numa_flags(void)
+static inline int cpu_numa_flags(void)
 {
 	return SD_NUMA;
 }
@@ -999,7 +999,7 @@ void free_sched_domains(cpumask_var_t doms[], unsigned int ndoms);
 bool cpus_share_cache(int this_cpu, int that_cpu);
 
 typedef const struct cpumask *(*sched_domain_mask_f)(int cpu);
-typedef const int (*sched_domain_flags_f)(void);
+typedef int (*sched_domain_flags_f)(void);
 
 #define SDTL_OVERLAP	0x01
 
-- 
1.9.1

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