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irqchip/loongson-liointc: Fix potential dead lock 

In the function liointc_set_type(), we need to call the function
irq_gc_unlock_irqrestore() before returning.

Fixes: dbb1522679 ("irqchip: Add driver for Loongson I/O Local Interrupt Controller")
Reported-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1594087972-21715-8-git-send-email-yangtiezhu@loongson.cn
This commit is contained in:
Tiezhu Yang 2020-07-07 10:12:51 +08:00 committed by Marc Zyngier
parent b10cbca8f0
commit fa03587cad
1 changed files with 1 additions and 0 deletions
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drivers/irqchip/irq-loongson-liointc.c
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@ -114,6 +114,7 @@ static int liointc_set_type(struct irq_data *data, unsigned int type)
liointc_set_bit(gc, LIOINTC_REG_INTC_POL, mask, false);
break;
default:
irq_gc_unlock_irqrestore(gc, flags);
return -EINVAL;
}
irq_gc_unlock_irqrestore(gc, flags);