linux-kernel - [PATCH] powerpc: Mark variable `cpumsr` as unused

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Date:   Wed,  7 Nov 2018 21:26:41 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     Michael Ellerman <mpe@...erman.id.au>
Cc:     Mathieu Malaterre <malat@...ian.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH] powerpc: Mark variable `cpumsr` as unused

Add gcc attribute unused for `cpumsr` variable.

Fix warnings treated as errors with W=1:

  arch/powerpc/kernel/process.c:231:16: error: variable ‘cpumsr’ set but not used [-Werror=unused-but-set-variable]
  arch/powerpc/kernel/process.c:296:16: error: variable ‘cpumsr’ set but not used [-Werror=unused-but-set-variable]

Signed-off-by: Mathieu Malaterre <malat@...ian.org>
---
 arch/powerpc/kernel/process.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 96f34730010f..b9f1a2408738 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -228,7 +228,7 @@ EXPORT_SYMBOL_GPL(flush_fp_to_thread);
 
 void enable_kernel_fp(void)
 {
-	unsigned long cpumsr;
+	unsigned long cpumsr __maybe_unused;
 
 	WARN_ON(preemptible());
 
@@ -293,7 +293,7 @@ EXPORT_SYMBOL(giveup_altivec);
 
 void enable_kernel_altivec(void)
 {
-	unsigned long cpumsr;
+	unsigned long cpumsr __maybe_unused;
 
 	WARN_ON(preemptible());
 
-- 
2.11.0