From: Bartosz Golaszewski bartosz.golaszewski@linaro.org
commit 5a78d5db9c90c9dc84212f40a5f2687b7cafc8ec upstream.
Simulated chips use a mutex for synchronization in driver callbacks so they must not be called from interrupt context. Set the can_sleep field of the GPIO chip to true to force users to only use threaded irqs.
Fixes: cb8c474e79be ("gpio: sim: new testing module") Signed-off-by: Bartosz Golaszewski bartosz.golaszewski@linaro.org Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Reviewed-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpio/gpio-sim.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/gpio/gpio-sim.c +++ b/drivers/gpio/gpio-sim.c @@ -429,6 +429,7 @@ static int gpio_sim_add_bank(struct fwno gc->set_config = gpio_sim_set_config; gc->to_irq = gpio_sim_to_irq; gc->free = gpio_sim_free; + gc->can_sleep = true;
ret = devm_gpiochip_add_data(dev, gc, chip); if (ret)