[PATCH 1/2] gpio: aspeed: Convert aspeed_gpio.lock to raw_spinlock
brgl at bgdev.pl
Sat Dec 11 02:15:26 AEDT 2021
On Sat, Dec 4, 2021 at 6:11 PM Iwona Winiarska
<iwona.winiarska at intel.com> wrote:
> The gpio-aspeed 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:
> [ 0.649797] [ BUG: Invalid wait context ]
> because aspeed_gpio.lock (spin_lock_t) is taken under irq_desc.lock
> Let's use of raw_spinlock_t instead of spinlock_t.
> Signed-off-by: Iwona Winiarska <iwona.winiarska at intel.com>
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