diff options
| author | William Breathitt Gray <vilhelm.gray@gmail.com> | 2018-10-22 14:10:06 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-11-05 08:54:42 +0100 |
| commit | f837bf6acaf54aa8b3a09378f5c8ec1ca2cd3338 (patch) | |
| tree | 1e9599acecc31744b22de6b88a3b93e4084efad7 /drivers/gpio | |
| parent | gpio: ws16c48: Mask read inputs for get_multiple (diff) | |
| download | linux-f837bf6acaf54aa8b3a09378f5c8ec1ca2cd3338.tar.xz linux-f837bf6acaf54aa8b3a09378f5c8ec1ca2cd3338.zip | |
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 <linux@rasmusvillemoes.dk>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-pci-idio-16.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |