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author | Julia Cartwright <julia@ni.com> | 2017-03-09 10:21:54 -0600 |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2017-03-16 21:52:07 +0100 |
commit | c69fcea57e9d2b27025235b3205861c3895fa618 (patch) | |
tree | bfc9941e4d7afe417b550aea8f7c0774ae3f0878 /drivers/hwspinlock | |
parent | 45897809d518c7a84b215c79b58e4add9b8a1d40 (diff) | |
download | talos-obmc-linux-c69fcea57e9d2b27025235b3205861c3895fa618.tar.gz talos-obmc-linux-c69fcea57e9d2b27025235b3205861c3895fa618.zip |
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>
Diffstat (limited to 'drivers/hwspinlock')
0 files changed, 0 insertions, 0 deletions