From: William Breathitt Gray Date: Mon, 22 Oct 2018 12:10:20 +0000 (+0900) Subject: gpio: pcie-idio-24: Mask read inputs for get_multiple X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=25451945648af488077ed61afc59a79710422f31;p=openwrt%2Fstaging%2Fblogic.git gpio: pcie-idio-24: Mask read inputs for get_multiple 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 Signed-off-by: William Breathitt Gray Signed-off-by: Linus Walleij --- diff --git a/drivers/gpio/gpio-pcie-idio-24.c b/drivers/gpio/gpio-pcie-idio-24.c index f953541e7890..52f1647a46fd 100644 --- a/drivers/gpio/gpio-pcie-idio-24.c +++ b/drivers/gpio/gpio-pcie-idio-24.c @@ -243,7 +243,7 @@ static int idio_24_gpio_get_multiple(struct gpio_chip *chip, port_state = ioread8(&idio24gpio->reg->ttl_in0_7); /* 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;