ARM: vexpress/dcscb: add CPU use counts to the power up/down API implementation

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It is possible for a CPU to be told to power up before it managed
to power itself down.  Solve this race with a usage count to deal
with this possibility as mandated by the MCPM API definition.

Signed-off-by: nicolas Pitre <nico@linaro.org>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>

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Nicolas Pitre 2012-07-16 22:07:10 -04:00

parent 1e904e1bf6

commit 13eae144ec

1 changed files with 59 additions and 15 deletions

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arch/arm/mach-vexpress/dcscb.c

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