[PATCH 2/2] gpio: aspeed-sgpio: Convert aspeed_sgpio.lock to raw_spinlock

Bartosz Golaszewski brgl at bgdev.pl
Sat Dec 11 02:15:42 AEDT 2021

On Sat, Dec 4, 2021 at 6:11 PM Iwona Winiarska
<iwona.winiarska at intel.com> wrote:
> The gpio-aspeed-sgpio driver implements an irq_chip which need to be
> invoked from hardirq context. Since spin_lock() can sleep with
> PREEMPT_RT, it is no longer legal to invoke it while interrupts are
> disabled.
> This also causes lockdep to complain about:
> [   25.919465] [ BUG: Invalid wait context ]
> because aspeed_sgpio.lock (spin_lock_t) is taken under irq_desc.lock
> (raw_spinlock_t).
> Let's use of raw_spinlock_t instead of spinlock_t.
> Signed-off-by: Iwona Winiarska <iwona.winiarska at intel.com>
> ---

Applied, thanks!


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