alpha: use alpha_ni_syscall only for syscall zero
Once upon a time it used to have a C part that printed a warning about unimplemented OSF syscalls. That's what it's been doing all over the OSF syscall range, while the native Linux syscall range uses sys_ni_syscall(). With those warnings about unimplemented OSF syscalls gone (circa 2.4), alpha_ni_syscall() has shrunk to that little bit of asm and the only reason it hasn't been replaced with sys_ni_syscall() everywhere is that extra twist needed in case of syscall #0. Let's keep it only for syscall #0 and replace the rest with sys_ni_syscall. And use sys_ni_syscall for "number out range" in ptraced-call case, as we'd been doing for normal codepath since 2.1.86... Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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