Commit fa86963a authored by Bartosz Golaszewski's avatar Bartosz Golaszewski Committed by Linus Walleij
Browse files

gpio: mockup: verify that ngpio > 0



Improve the module params sanitization: bail out from init if the user
tries to pass a non-positive number of GPIO lines for any mockup chip.

Signed-off-by: default avatarBartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 46526c15
......@@ -335,6 +335,15 @@ static int __init gpio_mockup_init(void)
/* Each chip is described by two values. */
num_chips = gpio_mockup_params_nr / 2;
/*
* The second value in the <base GPIO - number of GPIOS> pair must
* always be greater than 0.
*/
for (i = 0; i < num_chips; i++) {
if (gpio_mockup_ranges[i * 2 + 1] < 0)
return -EINVAL;
}
gpio_mockup_dbg_dir = debugfs_create_dir("gpio-mockup-event", NULL);
if (IS_ERR_OR_NULL(gpio_mockup_dbg_dir))
gpio_mockup_err("error creating debugfs directory\n");
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment