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| H A D | gpio-altera.c | diff 21d01c9c081ab231d6ef9d94ad9345c58b6568c1 Thu Mar 09 17:21:49 CET 2017 Julia Cartwright <julia@ni.com> gpio: altera: make use of raw_spinlock variants
The altera 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>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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