diff options
| author |   Bartosz Golaszewski <brgl@bgdev.pl> | 2017-11-27 11:48:39 +0100 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2017-12-02 22:42:24 +0100 |
| commit | b447a75100a63c114a8aaa02563088f4995c09f3 (patch) | |
| tree | b89d507ec4b2d136657b693d7d71cd3ac72f7442 /drivers/gpio/gpio-mockup.c | |
| parent | gpio: mockup: parse the module params in init, not probe (diff) | |
| download | linux-dev-b447a75100a63c114a8aaa02563088f4995c09f3.tar.xz linux-dev-b447a75100a63c114a8aaa02563088f4995c09f3.zip | |
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>
Diffstat (limited to 'drivers/gpio/gpio-mockup.c')
| -rw-r--r-- | drivers/gpio/gpio-mockup.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c index b70f3b0c30b1..0a269cbe197c 100644 --- a/drivers/gpio/gpio-mockup.c +++ b/drivers/gpio/gpio-mockup.c @@ -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); |