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ARM: 8073/1: unwind: Use arm_get_current_stackframe

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Make the unwind code use the correct API so that the frame pointer
is extracted from the correct register.

Signed-off-by: Nikolay Borisov <Nikolay.Borisov@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Nikolay Borisov 2014-06-03 19:49:14 +01:00 committed by Russell King
parent a3250c92aa
commit c8bee0ad78
1 changed files with 3 additions and 5 deletions
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8
arch/arm/kernel/unwind.c
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@ -479,12 +479,10 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk)
tsk = current;
if (regs) {
frame.fp = regs->ARM_fp;
frame.sp = regs->ARM_sp;
frame.lr = regs->ARM_lr;
arm_get_current_stackframe(regs, &frame);
/* PC might be corrupted, use LR in that case. */
frame.pc = kernel_text_address(regs->ARM_pc)
? regs->ARM_pc : regs->ARM_lr;
if (!kernel_text_address(regs->ARM_pc))
frame.pc = regs->ARM_lr;
} else if (tsk == current) {
frame.fp = (unsigned long)__builtin_frame_address(0);
frame.sp = current_sp;