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s390/unwind: unify task is current checks

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Avoid mixture of task == NULL and task == current meaning the same
thing and simply always initialize task with current in unwind_start.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik
2019-11-22 12:35:34 +01:00
parent 7f28dad395
commit 103b4cca60
3 changed files with 3 additions and 6 deletions
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2
arch/s390/include/asm/stacktrace.h
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@@ -38,7 +38,7 @@ static inline unsigned long get_stack_pointer(struct task_struct *task,
{
if (regs)
return (unsigned long) kernel_stack_pointer(regs);
if (!task || task == current)
if (task == current)
return current_stack_pointer();
return (unsigned long) task->thread.ksp;
}