diff options
Diffstat (limited to 'arch/arm/kernel/process.c')
| -rw-r--r-- | arch/arm/kernel/process.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 44bc0b327e2b..c6dec5fc20aa 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -376,17 +376,18 @@ asmlinkage void ret_from_fork(void) __asm__("ret_from_fork"); int copy_thread(unsigned long clone_flags, unsigned long stack_start, - unsigned long stk_sz, struct task_struct *p, struct pt_regs *regs) + unsigned long stk_sz, struct task_struct *p) { struct thread_info *thread = task_thread_info(p); struct pt_regs *childregs = task_pt_regs(p); memset(&thread->cpu_context, 0, sizeof(struct cpu_context_save)); - if (likely(regs)) { - *childregs = *regs; + if (likely(!(p->flags & PF_KTHREAD))) { + *childregs = *current_pt_regs(); childregs->ARM_r0 = 0; - childregs->ARM_sp = stack_start; + if (stack_start) + childregs->ARM_sp = stack_start; } else { memset(childregs, 0, sizeof(struct pt_regs)); thread->cpu_context.r4 = stk_sz; @@ -399,7 +400,7 @@ copy_thread(unsigned long clone_flags, unsigned long stack_start, clear_ptrace_hw_breakpoint(p); if (clone_flags & CLONE_SETTLS) - thread->tp_value = regs->ARM_r3; + thread->tp_value = childregs->ARM_r3; thread_notify(THREAD_NOTIFY_COPY, thread); |