Messages in this thread Patch in this message |  | | From | Bartosz Golaszewski <> | Subject | [PATCH 03/18] gpio: mockup: verify the number of GPIO chips requested | Date | Mon, 27 Nov 2017 11:48:39 +0100 |
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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> --- drivers/gpio/gpio-mockup.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
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); -- 2.15.0
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