| commit | 3d39019a1655d195a60a86ebf38f9da30bd83d03 | [log] [tgz] |
|---|---|---|
| author | David Daney <david.daney@cavium.com> | Thu Apr 25 15:48:53 2013 +0000 |
| committer | Ralf Baechle <ralf@linux-mips.org> | Fri Apr 26 17:18:24 2013 +0200 |
| tree | 3865e565fe49f2da4d9e690c8fdf63d7c04dbfa3 | |
| parent | e01961ceea5453ba93c386adf49fff6d1b811e74 [diff] |
MIPS: Remove redundant instructions from arch_spin_{,try}lock.
We were doing:
SRL $r,$?,16
ANDI $r,$r,0xffff
The logical right shift by 16 leaves the upper 16 bits clear, so the
subsequent masking out of those bits is redundant, and can safely be
removed.
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>