linux-kernel - [PATCH] arch/x86: remove redundant null checks before kmem_cache

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Message-ID: <20171008031523.jj63si46bgb27yxu@debian>
Date:   Sat, 7 Oct 2017 23:15:23 -0400
From:   Tim Hansen <devtimhansen@...il.com>
To:     pbonzini@...hat.com
Cc:     rkrcmar@...hat.com, tglx@...utronix.de, mingo@...hat.com,
        hpa@...or.com, x86@...nel.org, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, alexander.levin@....verizon.com,
        devtimhansen@...il.com
Subject: [PATCH] arch/x86: remove redundant null checks before
 kmem_cache_destroy

Remove redundant null checks before calling kmem_cache_destroy.

Found with make coccicheck M=arch/x86/kvm on linux-next tag 
next-20170929.

Signed-off-by: Tim Hansen <devtimhansen@...il.com>
---
 arch/x86/kvm/mmu.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index eca30c1eb1d9..a6c7177326c5 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -5463,10 +5463,8 @@ static struct shrinker mmu_shrinker = {
 
 static void mmu_destroy_caches(void)
 {
-	if (pte_list_desc_cache)
-		kmem_cache_destroy(pte_list_desc_cache);
-	if (mmu_page_header_cache)
-		kmem_cache_destroy(mmu_page_header_cache);
+	kmem_cache_destroy(pte_list_desc_cache);
+	kmem_cache_destroy(mmu_page_header_cache);
 }
 
 int kvm_mmu_module_init(void)
-- 
2.14.2