linux-kernel - [PATCH] ia64: old_rr4 added under CONFIG_HUGETLB

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Message-Id: <20220626022114.4020-1-jrdr.linux@gmail.com>
Date:   Sun, 26 Jun 2022 07:51:14 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     linux-ia64@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        "Souptick Joarder (HPE)" <jrdr.linux@...il.com>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH] ia64: old_rr4 added under CONFIG_HUGETLB_PAGE

From: "Souptick Joarder (HPE)" <jrdr.linux@...il.com>

kernel test robot throws below warning ->

arch/ia64/include/asm/mmu_context.h: In function 'reload_context':
   arch/ia64/include/asm/mmu_context.h:127:48: warning: variable
'old_rr4' set but not used [-Wunused-but-set-variable]
     127 |         unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4;

Added it under CONFIG_HUGETLB_PAGE

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Souptick Joarder (HPE) <jrdr.linux@...il.com>
---
 arch/ia64/include/asm/mmu_context.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/ia64/include/asm/mmu_context.h b/arch/ia64/include/asm/mmu_context.h
index 87a0d5bc11ef..06257e355d00 100644
--- a/arch/ia64/include/asm/mmu_context.h
+++ b/arch/ia64/include/asm/mmu_context.h
@@ -124,9 +124,12 @@ reload_context (nv_mm_context_t context)
 {
 	unsigned long rid;
 	unsigned long rid_incr = 0;
-	unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4;
+	unsigned long rr0, rr1, rr2, rr3, rr4;
 
+#ifdef CONFIG_HUGETLB_PAGE
+	unsigned long old_rr4;
 	old_rr4 = ia64_get_rr(RGN_BASE(RGN_HPAGE));
+#endif
 	rid = context << 3;	/* make space for encoding the region number */
 	rid_incr = 1 << 8;
 
-- 
2.25.1