linux-kernel - [PATCH] ARM: mm: mark private VM_FAULT_X defines as vm_fault

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Date:   Mon, 15 Nov 2021 15:58:34 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Russell King <linux@...linux.org.uk>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     Kefeng Wang <wangkefeng.wang@...wei.com>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH] ARM: mm: mark private VM_FAULT_X defines as vm_fault_t

This fixes several sparse warnings for fault.c:

arch/arm/mm/fault.c:210:24: sparse:     expected restricted vm_fault_t
arch/arm/mm/fault.c:210:24: sparse:     got int
...
arch/arm/mm/fault.c:345:24: sparse: sparse: restricted vm_fault_t degrades to integer

Reported-by: kernel test robot <lkp@...el.com>
Fixes: caed89dab0ca ("ARM: 9128/1: mm: Refactor the __do_page_fault()")
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 arch/arm/mm/fault.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index bc8779d54a64..013921a5909b 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -191,8 +191,8 @@ void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 }
 
 #ifdef CONFIG_MMU
-#define VM_FAULT_BADMAP		0x010000
-#define VM_FAULT_BADACCESS	0x020000
+#define VM_FAULT_BADMAP		((__force vm_fault_t)0x010000)
+#define VM_FAULT_BADACCESS	((__force vm_fault_t)0x020000)
 
 static inline bool is_permission_fault(unsigned int fsr)
 {
-- 
2.26.2