Hope you will be resubmitting this.
> +/*
> + * rfkill key structure.
> + */
> +struct rfkill_key {
> + /*
> + * For sysfs representation.
> + */
> + struct class_device *cdev;
> +
> + /*
> + * Pointer to rfkill structure
> + * that was filled in by key driver.
> + */
> + struct rfkill *rfkill;
Since rfkill is basically a function pointer table,
can it be made const?
> + /*
> + * Pointer to type structure that this key belongs to.
> + */
> + struct rfkill_type *type;
> +
> + /*
> + * Once key status change has been detected, the toggled
> + * field should be set to indicate a notification to
> + * user or driver should be performed.
> + */
> + int toggled;
> +
> + /*
> + * Current state of the device radio, this state will
> + * change after the radio has actually been toggled since
> + * receiving the radio key event.
> + */
> + int radio_status;
> +
> + /*
> + * Current status of the key which controls the radio,
> + * this value will change after the key state has changed
> + * after polling, or the key driver has send the new state
> + * manually.
> + */
> + int key_status;
Maybe turn these bits into a bit values (set_bit/clear_bit) in an unsigned long.
> + /*
> + * Input device for this key,
> + * we also keep track of the number of
> + * times this input device is open. This
> + * is important for determining to whom we
> + * should report key events.
> + */
> + struct input_dev *input;
> + unsigned int open_count;
atomic on open_count?
> + /*
> + * Key index number.
> + */
> + unsigned int key_index;
> +
> + /*
> + * List head structure to be used
> + * to add this structure to the list.
> + */
> + struct list_head entry;
> +};
> +
> +/*
> + * rfkill key type structure.
> + */
> +struct rfkill_type {
> + /*
> + * For sysfs representation.
> + */
> + struct class_device *cdev;
> +
> + /*
> + * Name of this radio type.
> + */
> + char *name;
const?
> + /*
> + * Key type identification. Value must be any
> + * in the key_type enum.
> + */
> + unsigned int key_type;
> +
> + /*
> + * Number of registered keys of this type.
> + */
> + unsigned int key_count;
> +};
> +
> +/*
> + * rfkill master structure.
> + */
> +struct rfkill_master {
> + /*
> + * For sysfs representation.
> + */
> + struct class *class;
> +
> + /*
> + * All access to the master structure
> + * and its children (the keys) are protected
> + * by this key lock.
> + */
> + struct semaphore key_sem;
mutex instead of semaphort
> + /*
> + * List of available key types.
> + */
> + struct rfkill_type type[KEY_TYPE_MAX];
> +
> + /*
> + * Total number of registered keys.
> + */
> + unsigned int key_count;
> +
> + /*
> + * Number of keys that require polling
> + */
> + unsigned int poll_required;
> +
> + /*
> + * List of rfkill_key structures.
> + */
> + struct list_head key_list;
> +
> + /*
> + * Work structures for periodic polling,
> + * as well as the scheduled radio toggling.
> + */
> + struct work_struct toggle_work;
> + struct work_struct poll_work;
delayed_rearming_work instead?
> +};
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