public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-18 22:14:16 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

gpio: 104-dio-48e: Mask read inputs for get_multiple

Browse source 
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>
This commit is contained in:
William Breathitt Gray 2018-10-22 21:08:59 +09:00 • committed by Linus Walleij
parent 7ddb7dce0a
commit f90deea4a6
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/gpio/gpio-104-dio-48e.c
View file

@ -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;