tree 7d425ce27c66cbe7df20a96bc6fde474e9c7f952
parent c69fcea57e9d2b27025235b3205861c3895fa618
author Julia Cartwright <julia@ni.com> 1489076513 -0600
committer Linus Walleij <linus.walleij@linaro.org> 1489697528 +0100

gpio: ath79: make use of raw_spinlock variants

The ath79 gpio 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>
Acked-by: Aban Bedel <albeu@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>