Re: [PATCH] Add Linux Driver for Intel Langwell Watchdog

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

> +	/* send the threshold and soft_threshold via IPC to the Lincroft */
> +	reg_data.payload1 = watchdog_device.soft_threshold;
> +	reg_data.payload2 = watchdog_device.threshold;
> +	ipc_set_watchdog(&reg_data);

That still doesn't seem to be merged upstream - someone needs poking to
at least get an IPC driver into staging.


> + * /dev/watchdog handling
> + */
> +static int langwell_open(struct inode *inode, struct file *file)
> +{
> +	/* Miscdevice structure pointer already saved in private_data */
> +
> +	struct watchdog_reg_data reg_data;
> +
> +	if (!capable(CAP_SYS_ADMIN))
> +		return -EPERM;

File permissions will deal with that bit

> +
> +	if (test_and_set_bit(0, &watchdog_device.driver_open))
> +		return -ENOTTY;

EBUSY