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authorJulia Cartwright <julia@ni.com>2017-03-09 10:21:54 -0600
committerLinus Walleij <linus.walleij@linaro.org>2017-03-16 21:52:07 +0100
commitc69fcea57e9d2b27025235b3205861c3895fa618 (patch)
treebfc9941e4d7afe417b550aea8f7c0774ae3f0878 /drivers/hwspinlock
parent45897809d518c7a84b215c79b58e4add9b8a1d40 (diff)
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gpio: bcm-kona: make use of raw_spinlock variants
The bcm-kona 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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