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misc: hi6421-spmi-pmic: Use generic_handle_irq_safe().

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generic_handle_irq() is invoked from a regular interrupt service
routine. This handler will become a forced-threaded handler on
PREEMPT_RT and will be invoked with enabled interrupts. The
generic_handle_irq() must be invoked with disabled interrupts in order
to avoid deadlocks.

Instead of manually disabling interrupts before invoking use
generic_handle_irq_safe() which can be invoked with enabled and disabled
interrupts.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org> 
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220211181500.1856198-5-bigeasy@linutronix.de
This commit is contained in:
Sebastian Andrzej Siewior 2022-02-11 19:14:57 +01:00 committed by Thomas Gleixner
parent d2206fcabd
commit 1b9855de1e
1 changed files with 3 additions and 3 deletions
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6
drivers/misc/hi6421v600-irq.c
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@ -117,8 +117,8 @@ static irqreturn_t hi6421v600_irq_handler(int irq, void *__priv)
* If both powerkey down and up IRQs are received,
* handle them at the right order
*/
generic_handle_irq(priv->irqs[POWERKEY_DOWN]);
generic_handle_irq(priv->irqs[POWERKEY_UP]);
generic_handle_irq_safe(priv->irqs[POWERKEY_DOWN]);
generic_handle_irq_safe(priv->irqs[POWERKEY_UP]);
pending &= ~HISI_IRQ_POWERKEY_UP_DOWN;
}
@ -126,7 +126,7 @@ static irqreturn_t hi6421v600_irq_handler(int irq, void *__priv)
continue;
for_each_set_bit(offset, &pending, BITS_PER_BYTE) {
generic_handle_irq(priv->irqs[offset + i * BITS_PER_BYTE]);
generic_handle_irq_safe(priv->irqs[offset + i * BITS_PER_BYTE]);
}
}