gpiolib: Add init_valid_mask exported function

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Add a function that allows initializing the valid_mask from
gpiochip_add_data.

This prevents race conditions during gpiochip initialization.

If the function is not exported, then the old behaviour is respected,
this is, set all gpios as valid.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Tested-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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This commit is contained in:

Ricardo Ribalda Delgado 2018-10-05 08:52:58 +02:00 • committed by Linus Walleij

parent 2505c7b012

commit f8ec92a9f6

2 changed files with 20 additions and 3 deletions

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16

drivers/gpio/gpiolib.c

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7

include/linux/gpio/driver.h

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