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-ws16c48.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c index c7028eb0b8e1..5cf3697bfb15 100644 --- a/drivers/gpio/gpio-ws16c48.c +++ b/drivers/gpio/gpio-ws16c48.c @@ -169,7 +169,7 @@ static int ws16c48_gpio_get_multiple(struct gpio_chip *chip, port_state = inb(ws16c48gpio->base + 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
