AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

gpio: ws16c48: 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 21:09:49 +09:00 committed by Linus Walleij
parent 3bfbc44029
commit 7a702691d0
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-ws16c48.c
View File

@ -169,7 +169,7 @@ static int ws16c48_gpio_get_multiple(struct gpio_chip *chip,
port_state = inb(ws16c48gpio->base + 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;