p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

gpio: 104-idi-48e: Mask the 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>
This commit is contained in:
William Breathitt Gray 2018-10-22 21:09:16 +09:00 committed by Linus Walleij
parent f90deea4a6
commit b7f53f6798
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-idi-48.c
View File

@ -128,7 +128,7 @@ static int idi_48_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask,
port_state = inb(idi48gpio->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;