mfd: asic3: Make use of raw_spinlock variants
authorJulia Cartwright <julia@ni.com>
Tue, 21 Mar 2017 22:43:04 +0000 (17:43 -0500)
committerLee Jones <lee.jones@linaro.org>
Thu, 27 Apr 2017 08:25:05 +0000 (09:25 +0100)
commit93ad4471912029f7519c23da56538a5d54552124
tree223275410925aac3cb19f4fedb8c94127a3afc58
parent0c227c51b98c03c6e7fb4f342f930cf576292064
mfd: asic3: Make use of raw_spinlock variants

The asic3 mfd driver currently implements an irq_chip for handling
interrupts; due to how irq_chip handling is done, it's necessary for the
irq_chip methods to be invoked from hardirq context, even on a a
real-time kernel.  Because the spinlock_t type becomes a "sleeping"
spinlock w/ RT kernels, it is not suitable to be used with irq_chips.

A quick audit of the operations under the lock reveal that they do only
minimal, bounded work, and are therefore safe to do under a raw spinlock.

Signed-off-by: Julia Cartwright <julia@ni.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
drivers/mfd/asic3.c