powerpc/mm: Return directly after a failed __copy_from_user() in sys_subpage_prot()
authorMarkus Elfring <elfring@users.sourceforge.net>
Sat, 21 Jan 2017 15:10:50 +0000 (16:10 +0100)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 25 Jan 2017 02:34:22 +0000 (13:34 +1100)
commita967f161abc7c4a6936ceb15737f75c52bfd07f2
treeb40a6cdb43d2d56421e7bfb61fee3506ea809197
parent3c4b66a6d0d2b9f2418f9a09d528e42e2dc18acf
powerpc/mm: Return directly after a failed __copy_from_user() in sys_subpage_prot()

This function already has multiple exit points, so there's no harm
adding another. Although it looks odd to return directly in a function
which takes a lock, we've actually just dropped the mmap_sem in this
code, so there's really no reason to go via a label. And it means we can
drop the unhelpfully named out2 label.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
[mpe: Rewrite change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/mm/subpage-prot.c