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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2022-09-19 14:43:46 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-09-19 15:08:38 +0200 |
| commit | f285de79569f9e674816a67308316206e4eb30ee (patch) | |
| tree | 7e18e9e158f2b85cc8a14101141d0f41be2b3784 | |
| parent | f460c70125bcb1b753f152d9d0c9cee3ddbc2d91 (diff) | |
| download | linux-f285de79569f9e674816a67308316206e4eb30ee.tar.gz linux-f285de79569f9e674816a67308316206e4eb30ee.tar.bz2 linux-f285de79569f9e674816a67308316206e4eb30ee.zip | |
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
| -rw-r--r-- | drivers/ssb/driver_gpio.c | 6 |
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; |