MIPS: Always use r4k_wait_irqoff for MIPSr6
authorPaul Burton <paul.burton@imgtec.com>
Tue, 22 Sep 2015 18:24:20 +0000 (11:24 -0700)
committerRalf Baechle <ralf@linux-mips.org>
Wed, 11 Nov 2015 07:35:23 +0000 (08:35 +0100)
commit5b10a0e84b4ebe02a7018846e882caa112b4ffc6
tree9534250c4b43ca2f806b63a48a11883ecf3f7168
parent78a54c4d8e5a7915a4ec2ba0eb461fae50590683
MIPS: Always use r4k_wait_irqoff for MIPSr6

Prior to release 6 of the MIPS architecture it has been implementation
dependent whether masked interrupts cause a wait instruction to return,
so the kernel has effectively had to maintain a whitelist of cores upon
which it is safe to use the r4k_wait_irqoff cpu_wait implementation.
With MIPSr6 this is no longer implementation dependent and
r4k_wait_irqoff can always be used.

Remove the existing I6400 case which will no longer ever be hit, and was
incorrect anyway since I6400 & r6 in general doesn't have the WII bit.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/11210/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/kernel/idle.c