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powerpc: don't bother with zero-extending arguments in sys_clone()

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... since the syscall glue had been doing that for 9 years already.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-10-21 22:25:53 -04:00
parent 53b50f9483
commit 9d401279d6
1 changed files with 0 additions and 8 deletions
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8
arch/powerpc/kernel/process.c
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@ -1025,8 +1025,6 @@ int get_unalign_ctl(struct task_struct *tsk, unsigned long adr)
return put_user(tsk->thread.align_ctl, (unsigned int __user *)adr);
}
#define TRUNC_PTR(x) ((typeof(x))(((unsigned long)(x)) & 0xffffffff))
int sys_clone(unsigned long clone_flags, unsigned long usp,
int __user *parent_tidp, void __user *child_threadptr,
int __user *child_tidp, int p6,
@ -1035,12 +1033,6 @@ int sys_clone(unsigned long clone_flags, unsigned long usp,
CHECK_FULL_REGS(regs);
if (usp == 0)
usp = regs->gpr[1]; /* stack pointer for child */
#ifdef CONFIG_PPC64
if (is_32bit_task()) {
parent_tidp = TRUNC_PTR(parent_tidp);
child_tidp = TRUNC_PTR(child_tidp);
}
#endif
return do_fork(clone_flags, usp, regs, 0, parent_tidp, child_tidp);
}