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@xxxxxxxxx>
---
drivers/hid/hid-wiimote-core.c | 53 +++++++++++++++++++++++-------------------
drivers/hid/hid-wiimote.h | 15 +++++++-----
2 files changed, 38 insertions(+), 30 deletions(-)
diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c
index 119dc56..2d85d3a 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);
diff --git a/drivers/hid/hid-wiimote.h b/drivers/hid/hid-wiimote.h
index a2629ed..2700d47 100644
--- a/drivers/hid/hid-wiimote.h
+++ b/drivers/hid/hid-wiimote.h
@@ -48,6 +48,14 @@ struct wiimote_buf {
size_t size;
};
+struct wiimote_queue {
+ spinlock_t lock;
+ struct work_struct worker;
+ __u8 head;
+ __u8 tail;
+ struct wiimote_buf outq[WIIMOTE_BUFSIZE];
+};
+
struct wiimote_state {
spinlock_t lock;
__u8 flags;
@@ -77,12 +85,7 @@ struct wiimote_data {
struct wiimote_ext *ext;
struct wiimote_debug *debug;
- spinlock_t qlock;
- __u8 head;
- __u8 tail;
- struct wiimote_buf outq[WIIMOTE_BUFSIZE];
- struct work_struct worker;
-
+ struct wiimote_queue queue;
struct wiimote_state state;
};
--
1.8.2.2
--
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