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From: hanterliu@gmail.com
To: linux-arm-kernel@lists.infradead.org
Cc: hanter Liu <hanterliu@gmail.com>, linux@armlinux.org.uk
Subject: [PATCH] ARM:alignment:correct variable type of nr_regs
Date: Sun,  5 Jan 2020 10:39:22 +0800	[thread overview]
Message-ID: <1578191962-19634-1-git-send-email-hanterliu@gmail.com> (raw)

From: hanter Liu <hanterliu@gmail.com>

if ldmstm instruction U bit is unset, nr_regs
should be negative value, so change variable
type of nr_regs from unsigned int to int.

Signed-off-by: hanter Liu <hanterliu@gmail.com>
---
 arch/arm/mm/alignment.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index 788c5cf..d8e3bd9 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -499,7 +499,8 @@ do_alignment_ldrstr(unsigned long addr, u32 instr, struct pt_regs *regs)
 static int
 do_alignment_ldmstm(unsigned long addr, u32 instr, struct pt_regs *regs)
 {
-	unsigned int rd, rn, correction, nr_regs, regbits;
+	int nr_regs;
+	unsigned int rd, rn, correction, regbits;
 	unsigned long eaddr, newaddr;
 
 	if (LDM_S_BIT(instr))
-- 
2.7.4


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             reply	other threads:[~2020-01-05  2:40 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-05  2:39 hanterliu [this message]
  -- strict thread matches above, loose matches on Subject: below --
2020-01-05  2:17 [PATCH] ARM:alignment:correct variable type of nr_regs hanterliu
2020-01-05 14:00 ` Russell King - ARM Linux admin

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