This patch masks the read inputs with the word mask in order to ensure only requested input states are returned in the bits array.
Suggested-by: Rasmus Villemoes <[email protected]> Signed-off-by: William Breathitt Gray <[email protected]> --- drivers/gpio/gpio-gpio-mm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-gpio-mm.c b/drivers/gpio/gpio-gpio-mm.c index b56ff2efbf36..8c150fd68d9d 100644 --- a/drivers/gpio/gpio-gpio-mm.c +++ b/drivers/gpio/gpio-gpio-mm.c @@ -211,7 +211,7 @@ static int gpiomm_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask, port_state = inb(gpiommgpio->base + ports[i]); /* store acquired bits at respective bits array offset */ - bits[word_index] |= port_state << word_offset; + bits[word_index] |= (port_state << word_offset) & word_mask; } return 0; -- 2.19.1
