diff options
author | David Herrmann <dh.herrmann@gmail.com> | 2013-05-05 23:12:46 +0200 |
---|---|---|
committer | Jiri Kosina <jkosina@suse.cz> | 2013-06-03 11:06:58 +0200 |
commit | 139385383267de547f5dbdbd2049d3a9c996c85e (patch) | |
tree | fda36e038e466cfa56863b1d9e5909d7964896ba /drivers/hid/hid-wiimote-core.c | |
parent | 92eda7e4e5f9728e643553b378f55c75739554c2 (diff) | |
download | linux-stable-139385383267de547f5dbdbd2049d3a9c996c85e.tar.gz linux-stable-139385383267de547f5dbdbd2049d3a9c996c85e.tar.bz2 linux-stable-139385383267de547f5dbdbd2049d3a9c996c85e.zip |
HID: wiimote: move queue handling into separate struct
The output queue is independent of the other wiimote modules and can run
on its own. Therefore, move its members into a separate struct so we don't
run into name collisions with other modules.
This is only a syntactic change that renames all queue members to queue.*.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-wiimote-core.c')
-rw-r--r-- | drivers/hid/hid-wiimote-core.c | 53 |
1 files changed, 29 insertions, 24 deletions
diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c index 119dc56ec0c3..2d85d3a8b60a 100644 --- a/drivers/hid/hid-wiimote-core.c +++ b/drivers/hid/hid-wiimote-core.c @@ -56,6 +56,8 @@ static enum power_supply_property wiimote_battery_props[] = { POWER_SUPPLY_PROP_SCOPE, }; +/* output queue handling */ + static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer, size_t count) { @@ -75,24 +77,27 @@ static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer, return ret; } -static void wiimote_worker(struct work_struct *work) +static void wiimote_queue_worker(struct work_struct *work) { - struct wiimote_data *wdata = container_of(work, struct wiimote_data, - worker); + struct wiimote_queue *queue = container_of(work, struct wiimote_queue, + worker); + struct wiimote_data *wdata = container_of(queue, struct wiimote_data, + queue); unsigned long flags; - spin_lock_irqsave(&wdata->qlock, flags); + spin_lock_irqsave(&wdata->queue.lock, flags); - while (wdata->head != wdata->tail) { - spin_unlock_irqrestore(&wdata->qlock, flags); - wiimote_hid_send(wdata->hdev, wdata->outq[wdata->tail].data, - wdata->outq[wdata->tail].size); - spin_lock_irqsave(&wdata->qlock, flags); + while (wdata->queue.head != wdata->queue.tail) { + spin_unlock_irqrestore(&wdata->queue.lock, flags); + wiimote_hid_send(wdata->hdev, + wdata->queue.outq[wdata->queue.tail].data, + wdata->queue.outq[wdata->queue.tail].size); + spin_lock_irqsave(&wdata->queue.lock, flags); - wdata->tail = (wdata->tail + 1) % WIIMOTE_BUFSIZE; + wdata->queue.tail = (wdata->queue.tail + 1) % WIIMOTE_BUFSIZE; } - spin_unlock_irqrestore(&wdata->qlock, flags); + spin_unlock_irqrestore(&wdata->queue.lock, flags); } static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer, @@ -116,22 +121,22 @@ static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer, * will reschedule itself until the queue is empty. */ - spin_lock_irqsave(&wdata->qlock, flags); + spin_lock_irqsave(&wdata->queue.lock, flags); - memcpy(wdata->outq[wdata->head].data, buffer, count); - wdata->outq[wdata->head].size = count; - newhead = (wdata->head + 1) % WIIMOTE_BUFSIZE; + memcpy(wdata->queue.outq[wdata->queue.head].data, buffer, count); + wdata->queue.outq[wdata->queue.head].size = count; + newhead = (wdata->queue.head + 1) % WIIMOTE_BUFSIZE; - if (wdata->head == wdata->tail) { - wdata->head = newhead; - schedule_work(&wdata->worker); - } else if (newhead != wdata->tail) { - wdata->head = newhead; + if (wdata->queue.head == wdata->queue.tail) { + wdata->queue.head = newhead; + schedule_work(&wdata->queue.worker); + } else if (newhead != wdata->queue.tail) { + wdata->queue.head = newhead; } else { hid_warn(wdata->hdev, "Output queue is full"); } - spin_unlock_irqrestore(&wdata->qlock, flags); + spin_unlock_irqrestore(&wdata->queue.lock, flags); } /* @@ -1157,8 +1162,8 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev) input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4); input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4); - spin_lock_init(&wdata->qlock); - INIT_WORK(&wdata->worker, wiimote_worker); + spin_lock_init(&wdata->queue.lock); + INIT_WORK(&wdata->queue.worker, wiimote_queue_worker); spin_lock_init(&wdata->state.lock); init_completion(&wdata->state.ready); @@ -1187,7 +1192,7 @@ static void wiimote_destroy(struct wiimote_data *wdata) input_unregister_device(wdata->accel); input_unregister_device(wdata->ir); input_unregister_device(wdata->input); - cancel_work_sync(&wdata->worker); + cancel_work_sync(&wdata->queue.worker); hid_hw_stop(wdata->hdev); kfree(wdata); |