alpha: marvel: make use of raw_spinlock variants
authorJulia Cartwright <julia@ni.com>
Tue, 21 Mar 2017 22:43:02 +0000 (17:43 -0500)
committerMatt Turner <mattst88@gmail.com>
Mon, 4 Sep 2017 19:04:31 +0000 (12:04 -0700)
commitb5a3a128b44219f0802a8b7895e09233853c8b43
treee706ab2929941997d0f5481c2e8b28568e3615d1
parentbeb1057feb1d061a0598440c73c4ca4e020c0751
alpha: marvel: make use of raw_spinlock variants

The alpha/marvel code 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: Matt Turner <mattst88@gmail.com>
arch/alpha/include/asm/core_marvel.h
arch/alpha/kernel/core_marvel.c
arch/alpha/kernel/sys_marvel.c