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gpio: mockup: verify the number of GPIO chips requested 

The number of supported mockup chips is limited. Check this limit when
parsing the module parameters.

Also: make sure that each chip is described with a <base - ngpio> pair.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Bartosz Golaszewski 2017-11-27 11:48:39 +01:00 committed by Linus Walleij
parent 20c35ac473
commit b447a75100
1 changed files with 3 additions and 1 deletions
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4
drivers/gpio/gpio-mockup.c
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@ -330,7 +330,9 @@ static int __init gpio_mockup_init(void)
{
int err;
if (gpio_mockup_params_nr < 2 || (gpio_mockup_params_nr % 2))
if ((gpio_mockup_params_nr < 2) ||
(gpio_mockup_params_nr % 2) ||
(gpio_mockup_params_nr > GPIO_MOCKUP_MAX_RANGES))
return -EINVAL;
gpio_mockup_dbg_dir = debugfs_create_dir("gpio-mockup-event", NULL);