diff options
| author | William Breathitt Gray <vilhelm.gray@gmail.com> | 2018-10-22 15:08:59 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-11-05 10:54:41 +0300 |
| commit | f90deea4a6615b7397c559565a4a4eb3ed98dd90 (patch) | |
| tree | d81a2ac7f225c27ae28f80a8565cc6aa0660b598 /drivers/gpio/gpio-104-dio-48e.c | |
| parent | 7ddb7dce0ab69aef140a0fb3034a07d356ad9252 (diff) | |
| download | linux-f90deea4a6615b7397c559565a4a4eb3ed98dd90.tar.xz | |
gpio: 104-dio-48e: 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/gpio-104-dio-48e.c')
| -rw-r--r-- | drivers/gpio/gpio-104-dio-48e.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |