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authorJulia Cartwright <julia@ni.com>2017-03-21 17:43:04 -0500
committerLee Jones <lee.jones@linaro.org>2017-04-27 09:25:05 +0100
commit93ad4471912029f7519c23da56538a5d54552124 (patch)
tree223275410925aac3cb19f4fedb8c94127a3afc58 /Documentation/process
parent0c227c51b98c03c6e7fb4f342f930cf576292064 (diff)
downloadtalos-op-linux-93ad4471912029f7519c23da56538a5d54552124.tar.gz
talos-op-linux-93ad4471912029f7519c23da56538a5d54552124.zip
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>
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