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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1b9dc91e41
Currently it is not save to call iio_push_event() from hard IRQ context since the IIO event code uses spin_lock()/spin_unlock() and it is not save to mix calls to spin_lock()/spin_unlock() from different contexts on the same lock. E.g. if the lock is being held in iio_event_chrdev_read() and an interrupts kicks in and the interrupt handler calls iio_push_event() we end uo with a deadlock. This patch updates iio_push_event() to use spin_lock_irqsave()/ spin_unlock_irqstrestore(), since it can be called from both IRQ and non-IRQ context. All other other users of the lock, which are always run in non-IRQ context, are updated to spin_lock_irq()/spin_unlock_irq(). Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org> |
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| .. | ||
| accel | ||
| adc | ||
| amplifiers | ||
| common | ||
| dac | ||
| frequency | ||
| gyro | ||
| imu | ||
| light | ||
| magnetometer | ||
| buffer_cb.c | ||
| iio_core_trigger.h | ||
| iio_core.h | ||
| industrialio-buffer.c | ||
| industrialio-core.c | ||
| industrialio-event.c | ||
| industrialio-trigger.c | ||
| industrialio-triggered-buffer.c | ||
| inkern.c | ||
| Kconfig | ||
| kfifo_buf.c | ||
| Makefile | ||