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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2022-09-19 14:43:46 +0200
committerThomas Gleixner <tglx@linutronix.de>2022-09-19 15:08:38 +0200
commitf285de79569f9e674816a67308316206e4eb30ee (patch)
tree7e18e9e158f2b85cc8a14101141d0f41be2b3784 /drivers/ssb
parentf460c70125bcb1b753f152d9d0c9cee3ddbc2d91 (diff)
ssb: gpio: 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_domain_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 <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/YnkfWFzvusFFktSt@linutronix.de
Diffstat (limited to 'drivers/ssb')
-rw-r--r--drivers/ssb/driver_gpio.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/ssb/driver_gpio.c b/drivers/ssb/driver_gpio.c
index 2de3896489c8..897cb8db5084 100644
--- a/drivers/ssb/driver_gpio.c
+++ b/drivers/ssb/driver_gpio.c
@@ -132,7 +132,8 @@ static irqreturn_t ssb_gpio_irq_chipco_handler(int irq, void *dev_id)
return IRQ_NONE;
for_each_set_bit(gpio, &irqs, bus->gpio.ngpio)
- generic_handle_irq(ssb_gpio_to_irq(&bus->gpio, gpio));
+ generic_handle_domain_irq_safe(bus->irq_domain, gpio);
+
ssb_chipco_gpio_polarity(chipco, irqs, val & irqs);
return IRQ_HANDLED;
@@ -330,7 +331,8 @@ static irqreturn_t ssb_gpio_irq_extif_handler(int irq, void *dev_id)
return IRQ_NONE;
for_each_set_bit(gpio, &irqs, bus->gpio.ngpio)
- generic_handle_irq(ssb_gpio_to_irq(&bus->gpio, gpio));
+ generic_handle_domain_irq_safe(bus->irq_domain, gpio);
+
ssb_extif_gpio_polarity(extif, irqs, val & irqs);
return IRQ_HANDLED;