From: William Breathitt Gray Date: Mon, 22 Oct 2018 12:10:06 +0000 (+0900) Subject: gpio: pci-idio-16: Mask read inputs for get_multiple X-Git-Tag: v5.0-rc1~103^2~48 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=f837bf6acaf54aa8b3a09378f5c8ec1ca2cd3338;p=linux.git gpio: pci-idio-16: 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-pci-idio-16.c b/drivers/gpio/gpio-pci-idio-16.c index 25d16b2af1c3..6b7349783223 100644 --- a/drivers/gpio/gpio-pci-idio-16.c +++ b/drivers/gpio/gpio-pci-idio-16.c @@ -146,7 +146,7 @@ static int idio_16_gpio_get_multiple(struct gpio_chip *chip, port_state = ioread8(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;