On Tue, 19 Jul 2022 19:27:06 +0200
Daniel Bristot de Oliveira <bristot@xxxxxxxxxx> wrote:
> +/*
> + * Interface to read the enable/disable status of a monitor.
> + */
> +static ssize_t monitor_desc_read_data(struct file *filp, char __user *user_buf, size_t count,
> + loff_t *ppos)
> +{
> + struct rv_monitor_def *mdef = filp->private_data;
> + char buff[256];
> +
> + memset(buff, 0, sizeof(buff));
> +
> + mutex_lock(&rv_interface_lock);
> + snprintf(buff, sizeof(buff), "%s\n", mdef->monitor->description);
> + mutex_unlock(&rv_interface_lock);
What exactly is the mutex protecting here?
-- Steve
> +
> + return simple_read_from_buffer(user_buf, count, ppos, buff, strlen(buff) + 1);
> +}
> +
