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-104-dio-48e.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c index 9c4e07fcb74b..92c8f944bf64 100644 --- a/drivers/gpio/gpio-104-dio-48e.c +++ b/drivers/gpio/gpio-104-dio-48e.c @@ -222,7 +222,7 @@ static int dio48e_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask, port_state = inb(dio48egpio->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
