linux-kernel - [PATCH] powerpc/pmac/smp: avoid unused-variable warnings

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Date:   Fri, 20 Sep 2019 18:39:51 +0300
From:   Ilie Halip <ilie.halip@...il.com>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Nathan Chancellor <natechancellor@...il.com>,
        clang-built-linux@...glegroups.com,
        Ilie Halip <ilie.halip@...il.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH] powerpc/pmac/smp: avoid unused-variable warnings

When building with ppc64_defconfig, the compiler reports
that these 2 variables are not used:
    warning: unused variable 'core99_l2_cache' [-Wunused-variable]
    warning: unused variable 'core99_l3_cache' [-Wunused-variable]

They are only used when CONFIG_PPC64 is not defined. Move
them into a section which does the same macro check.

Reported-by: Nathan Chancellor <natechancellor@...il.com>
Signed-off-by: Ilie Halip <ilie.halip@...il.com>
---
 arch/powerpc/platforms/powermac/smp.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index f95fbdee6efe..e44c606f119e 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -648,6 +648,10 @@ static void smp_core99_pfunc_tb_freeze(int freeze)
 
 static unsigned int core99_tb_gpio;	/* Timebase freeze GPIO */
 
+/* L2 and L3 cache settings to pass from CPU0 to CPU1 on G4 cpus */
+volatile static long int core99_l2_cache;
+volatile static long int core99_l3_cache;
+
 static void smp_core99_gpio_tb_freeze(int freeze)
 {
 	if (freeze)
@@ -660,10 +664,6 @@ static void smp_core99_gpio_tb_freeze(int freeze)
 
 #endif /* !CONFIG_PPC64 */
 
-/* L2 and L3 cache settings to pass from CPU0 to CPU1 on G4 cpus */
-volatile static long int core99_l2_cache;
-volatile static long int core99_l3_cache;
-
 static void core99_init_caches(int cpu)
 {
 #ifndef CONFIG_PPC64
-- 
2.17.1