| From | Linus Walleij <> | Date | Wed, 15 Mar 2017 10:53:23 +0100 | Subject | Re: [PATCH 02/19] gpio: altera: make use of raw_spinlock variants |
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On Thu, Mar 9, 2017 at 5:21 PM, Julia Cartwright <julia@ni.com> wrote:
> The altera 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>
Patch applied.
Yours, Linus Walleij
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