linux-kernel - [PATCH] powerpc/mm: Fix comparing pointer to 0 warning

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Date:   Tue, 10 Nov 2020 10:56:01 +0800
From:   xiakaixu1987@...il.com
To:     mpe@...erman.id.au, benh@...nel.crashing.org, paulus@...ba.org
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Kaixu Xia <kaixuxia@...cent.com>
Subject: [PATCH] powerpc/mm: Fix comparing pointer to 0 warning

From: Kaixu Xia <kaixuxia@...cent.com>

Fixes coccicheck warning:

./arch/powerpc/mm/pgtable_32.c:87:11-12: WARNING comparing pointer to 0

Avoid pointer type value compared to 0.

Reported-by: Tosk Robot <tencent_os_robot@...cent.com>
Signed-off-by: Kaixu Xia <kaixuxia@...cent.com>
---
 arch/powerpc/mm/pgtable_32.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 079159e97bca..888b9713a316 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -84,7 +84,7 @@ int __ref map_kernel_page(unsigned long va, phys_addr_t pa, pgprot_t prot)
 		pg = pte_alloc_kernel(pd, va);
 	else
 		pg = early_pte_alloc_kernel(pd, va);
-	if (pg != 0) {
+	if (pg) {
 		err = 0;
 		/* The PTE should never be already set nor present in the
 		 * hash table
-- 
2.20.0