linux-kernel - [PATCH AUTOSEL 4.14 14/20] arm64/mm: mark private VM_FAULT_X defines as vm_fault

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Message-Id: <20230525184520.2004878-14-sashal@kernel.org>
Date:   Thu, 25 May 2023 14:45:10 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Min-Hua Chen <minhuadotchen@...il.com>,
        kernel test robot <lkp@...el.com>,
        Will Deacon <will@...nel.org>, Sasha Levin <sashal@...nel.org>,
        catalin.marinas@....com, ardb@...nel.org,
        akpm@...ux-foundation.org, maz@...nel.org, surenb@...gle.com,
        mark.rutland@....com, peterx@...hat.com, willy@...radead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.14 14/20] arm64/mm: mark private VM_FAULT_X defines as vm_fault_t

From: Min-Hua Chen <minhuadotchen@...il.com>

[ Upstream commit d91d580878064b880f3574ac35b98d8b70ee8620 ]

This patch fixes several sparse warnings for fault.c:

arch/arm64/mm/fault.c:493:24: sparse: warning: incorrect type in return expression (different base types)
arch/arm64/mm/fault.c:493:24: sparse:    expected restricted vm_fault_t
arch/arm64/mm/fault.c:493:24: sparse:    got int
arch/arm64/mm/fault.c:501:32: sparse: warning: incorrect type in return expression (different base types)
arch/arm64/mm/fault.c:501:32: sparse:    expected restricted vm_fault_t
arch/arm64/mm/fault.c:501:32: sparse:    got int
arch/arm64/mm/fault.c:503:32: sparse: warning: incorrect type in return expression (different base types)
arch/arm64/mm/fault.c:503:32: sparse:    expected restricted vm_fault_t
arch/arm64/mm/fault.c:503:32: sparse:    got int
arch/arm64/mm/fault.c:511:24: sparse: warning: incorrect type in return expression (different base types)
arch/arm64/mm/fault.c:511:24: sparse:    expected restricted vm_fault_t
arch/arm64/mm/fault.c:511:24: sparse:    got int
arch/arm64/mm/fault.c:670:13: sparse: warning: restricted vm_fault_t degrades to integer
arch/arm64/mm/fault.c:670:13: sparse: warning: restricted vm_fault_t degrades to integer
arch/arm64/mm/fault.c:713:39: sparse: warning: restricted vm_fault_t degrades to integer

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Min-Hua Chen <minhuadotchen@...il.com>
Link: https://lore.kernel.org/r/20230502151909.128810-1-minhuadotchen@gmail.com
Signed-off-by: Will Deacon <will@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/mm/fault.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index d191b046d4c18..ef79263bb55f5 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -349,8 +349,8 @@ static void do_bad_area(unsigned long addr, unsigned int esr, struct pt_regs *re
 		__do_kernel_fault(addr, esr, regs);
 }
 
-#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 int __do_page_fault(struct mm_struct *mm, unsigned long addr,
 			   unsigned int mm_flags, unsigned long vm_flags,
-- 
2.39.2