pinctrl: sirf: atlas7: make use of raw_spinlock variants
authorJulia Cartwright <julia@ni.com>
Thu, 9 Mar 2017 16:22:05 +0000 (10:22 -0600)
committerLinus Walleij <linus.walleij@linaro.org>
Thu, 16 Mar 2017 15:39:15 +0000 (16:39 +0100)
commit82e529c1c7befe82fc7fc258b956e973056c20bb
tree79ea0b8320deeed40687ecef7dca2c915aa2191b
parent229710fecdd805abb753c480778ea0de47cbb1e2
pinctrl: sirf: atlas7: make use of raw_spinlock variants

The sirf atlas7 pinctrl drivers currently implement 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>
drivers/pinctrl/sirf/pinctrl-atlas7.c