gpiolib: irqchip: prevent driver unloading if gpio is used as irq only

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Now nothing prevents GPIO driver from being unloaded if its gpios
were requested as GPIO IRQs only (without calling gpio_request()).

Hence, add calls of try_module_get()/module_put() into
gpiochip_irq_reqres/relres() to track such scenario properly.

Cc: Johan Hovold <johan@kernel.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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Grygorii Strashko 2015-06-25 20:30:50 +03:00 • committed by Linus Walleij

parent 049aaf9f7e

commit 5b76e79c77

1 changed files with 5 additions and 0 deletions

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drivers/gpio/gpiolib.c

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