linux-kernel - [PATCH] mm: pagewalk: fix unused variable warning

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200107204607.1533842-1-arnd@arndb.de>
Date:   Tue,  7 Jan 2020 21:45:50 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Jérôme Glisse <jglisse@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Steven Price <steven.price@....com>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Arnd Bergmann <arnd@...db.de>, Albert Ou <aou@...s.berkeley.edu>,
        Alexandre Ghiti <alex@...ti.fr>,
        Andy Lutomirski <luto@...nel.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Borislav Petkov <bp@...en8.de>,
        Catalin Marinas <catalin.marinas@....com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "David S. Miller" <davem@...emloft.net>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
        James Hogan <jhogan@...nel.org>,
        James Morse <james.morse@....com>,
        "Liang, Kan" <kan.liang@...ux.intel.com>,
        Mark Rutland <mark.rutland@....com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Palmer Dabbelt <palmer@...ive.com>,
        Paul Burton <paul.burton@...s.com>,
        Paul Mackerras <paulus@...ba.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Russell King <linux@...linux.org.uk>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Vineet Gupta <vgupta@...opsys.com>,
        Will Deacon <will@...nel.org>, Zong Li <zong.li@...ive.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Ralph Campbell <rcampbell@...dia.com>,
        John Hubbard <jhubbard@...dia.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm: pagewalk: fix unused variable warning

One of the pagewalk patches introduced a harmless warning:

mm/hmm.c: In function 'hmm_vma_walk_pud':
mm/hmm.c:478:9: error: unused variable 'pmdp' [-Werror=unused-variable]
  pmd_t *pmdp;
         ^~~~
mm/hmm.c:477:30: error: unused variable 'next' [-Werror=unused-variable]
  unsigned long addr = start, next;
                              ^~~~

Remove both of the now-unused variables.

Fixes: cb4d03d5fb4c ("mm: pagewalk: add p4d_entry() and pgd_entry()")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 mm/hmm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/hmm.c b/mm/hmm.c
index a71295e99968..72e5a6d9a417 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -474,8 +474,7 @@ static int hmm_vma_walk_pud(pud_t *pudp, unsigned long start, unsigned long end,
 {
 	struct hmm_vma_walk *hmm_vma_walk = walk->private;
 	struct hmm_range *range = hmm_vma_walk->range;
-	unsigned long addr = start, next;
-	pmd_t *pmdp;
+	unsigned long addr = start;
 	pud_t pud;
 	int ret = 0;
 	spinlock_t *ptl = pud_trans_huge_lock(pudp, walk->vma);
-- 
2.20.0