From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx> I realized that the gpio-sim module doesn't lock the GPIOs as interrupts when they are requested from the irq_sim. This leads to users being able to change the direction of GPIOs that should remain as inputs to output. This series adds a notifier to the interrupt simulator that users can register with to be informed about interrupts being requested and released so that they can act accordingly. The gpio-sim is made to use this notifier and lock GPIOs as interrupts when needed. Thomas: if this is fine with you, can you Ack it so that I can take it through the GPIO tree for the next merge window? Bartosz Golaszewski (2): genirq/irq_sim: add a notifier for irqchip events gpio: sim: lock GPIOs as interrupts when they are requested drivers/gpio/gpio-sim.c | 30 +++++++++++++++++-- include/linux/irq_sim.h | 11 +++++++ kernel/irq/irq_sim.c | 64 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 103 insertions(+), 2 deletions(-) -- 2.40.1