On Wed, Sep 11, 2019 at 11:46:36AM -0300, André Almeida wrote:
>
> -static int nr_devices = 1;
> +static unsigned int nr_devices = 1;
> module_param(nr_devices, int, 0444);
^^^ you forgot to change the module_param to match
> + if (!nr_devices) {
> + pr_err("null_blk: invalid number of devices\n");
> + return -EINVAL;
> + }
I don't think this is necessary.
