[ARM] 4661/1: fix do_undefinstr wrt the enabling of IRQs

The lock is acquired with spin_lock_irqsave() and released in the
not-found case with spin_unlock_irqrestore().

Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 4764bd9ccee801ced5838d9043a5923c9e931cb8..5a52dd7f97febbb49d7411e5a67fc830e4592c8a 100644 (file)
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -327,7 +327,7 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
                if ((instr & hook->instr_mask) == hook->instr_val &&
                    (regs->ARM_cpsr & hook->cpsr_mask) == hook->cpsr_val) {
                        if (hook->fn(regs, instr) == 0) {
-                               spin_unlock_irq(&undef_lock);
+                               spin_unlock_irqrestore(&undef_lock, flags);
                                return;
                        }
                }