linux-kernel - [PATCH 04/19] powerpc/kvm: Mark variable tmp unused

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Message-Id: <20180322202007.23088-5-malat@debian.org>
Date:   Thu, 22 Mar 2018 21:19:50 +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,
        kvm-ppc@...r.kernel.org
Subject: [PATCH 04/19] powerpc/kvm: Mark variable tmp unused

Add gcc attribute unused to variable tmp. Fix warning treated as error with
W=1:

  arch/powerpc/kernel/kvm.c:675:6: error: variable ‘tmp’ set but not used [-Werror=unused-but-set-variable]

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

diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c
index 9ad37f827a97..cd3c088283f9 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -672,7 +672,7 @@ static void kvm_use_magic_page(void)
 {
 	u32 *p;
 	u32 *start, *end;
-	u32 tmp;
+	u32 tmp __maybe_unused;
 	u32 features;
 
 	/* Tell the host to map the magic page to -4096 on all CPUs */
-- 
2.11.0