From 118c3ba24d04f084eadd9d4a0ab7830f495e9106 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 19 Sep 2022 14:45:18 +0200 Subject: [PATCH] gpio: mlxbf2: Use generic_handle_irq_safe() On PREEMPT_RT enabled kernels the demultiplex interrupt handler is force threaded and runs with interrupts enabled. The invocation of generic_handle_irq() with interrupts enabled triggers a lockdep warning due to a non-irq safe lock acquisition. Instead of disabling interrupts on the driver level, use generic_handle_domain_irq_safe(). [ tglx: Split out from combo patch ] Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/YnkfWFzvusFFktSt@linutronix.de --- drivers/gpio/gpio-mlxbf2.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpio/gpio-mlxbf2.c b/drivers/gpio/gpio-mlxbf2.c index 64cb060d9d75..77a41151c921 100644 --- a/drivers/gpio/gpio-mlxbf2.c +++ b/drivers/gpio/gpio-mlxbf2.c @@ -273,10 +273,8 @@ static irqreturn_t mlxbf2_gpio_irq_handler(int irq, void *ptr) pending = readl(gs->gpio_io + YU_GPIO_CAUSE_OR_CAUSE_EVTEN0); writel(pending, gs->gpio_io + YU_GPIO_CAUSE_OR_CLRCAUSE); - for_each_set_bit(level, &pending, gc->ngpio) { - int gpio_irq = irq_find_mapping(gc->irq.domain, level); - generic_handle_irq(gpio_irq); - } + for_each_set_bit(level, &pending, gc->ngpio) + generic_handle_domain_irq_safe(gc->irq.domain, level); return IRQ_RETVAL(pending); }