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linux/arch/mips/include/asm/spinlock.h
David Daney 3d39019a16 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>
2013-04-26 17:18:24 +02:00

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