linux-kernel - [PATCH] kasan: fix coccinelle warnings in kasan_p*

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Date:   Mon,  4 Mar 2019 18:04:45 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>, kasan-dev@...glegroups.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     Kostya Serebryany <kcc@...gle.com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        kbuild test robot <lkp@...el.com>
Subject: [PATCH] kasan: fix coccinelle warnings in kasan_p*_table

kasan_p4d_table, kasan_pmd_table and kasan_pud_table are declared as
returning bool, but return 0 instead of false, which produces a coccinelle
warning. Fix it.

Fixes: 0207df4fa1a8 ("kernel/memremap, kasan: make ZONE_DEVICE with work with KASAN")
Reported-by: kbuild test robot <lkp@...el.com>
Signed-off-by: Andrey Konovalov <andreyknvl@...gle.com>
---
 mm/kasan/init.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/kasan/init.c b/mm/kasan/init.c
index 45a1b5e38e1e..fcaa1ca03175 100644
--- a/mm/kasan/init.c
+++ b/mm/kasan/init.c
@@ -42,7 +42,7 @@ static inline bool kasan_p4d_table(pgd_t pgd)
 #else
 static inline bool kasan_p4d_table(pgd_t pgd)
 {
-	return 0;
+	return false;
 }
 #endif
 #if CONFIG_PGTABLE_LEVELS > 3
@@ -54,7 +54,7 @@ static inline bool kasan_pud_table(p4d_t p4d)
 #else
 static inline bool kasan_pud_table(p4d_t p4d)
 {
-	return 0;
+	return false;
 }
 #endif
 #if CONFIG_PGTABLE_LEVELS > 2
@@ -66,7 +66,7 @@ static inline bool kasan_pmd_table(pud_t pud)
 #else
 static inline bool kasan_pmd_table(pud_t pud)
 {
-	return 0;
+	return false;
 }
 #endif
 pte_t kasan_early_shadow_pte[PTRS_PER_PTE] __page_aligned_bss;
-- 
2.21.0.352.gf09ad66450-goog