On Tue, Feb 26, 2019 at 11:01 AM Geert Uytterhoeven <[email protected]> wrote:
> While I strongly agree the firmware should be fixed not to configure > random GPIOs as outputs, shouldn't Linux just override this, if the GPIO > is not marked in use (has not been requested)? commit 7e7c059cb50c7c72d5a393b2c34fc57de1b01b55 Author: Linus Walleij <[email protected]> Date: Wed Jun 22 16:31:54 2016 +0200 gpio: convince line to become input in irq helper The generic IRQ helper library just checks if the IRQ line is set as input before activating it for interrupts. As we recently started to check things better with .get_dir() it turns out that it's good to try to convince the line to become an input before attempting to lock it as IRQ. Reviewed-by: Björn Andersson <[email protected]> Signed-off-by: Linus Walleij <[email protected]> led to: commit 78456d6ff815894e593675fc524cade9844501d5 Author: Linus Walleij <[email protected]> Date: Wed Jul 6 14:40:08 2016 +0200 Revert "gpio: convince line to become input in irq helper" This reverts commit 7e7c059cb50c7c72d5a393b2c34fc57de1b01b55. I was wrong about trying to do this, as it breaks the orthogonality between gpiochips and irqchips. Signed-off-by: Linus Walleij <[email protected]> Mainly because of Grygorii's remarks: https://marc.info/?l=linux-gpio&m=146779605005475&w=2 Yours, Linus Walleij
