@@ -324,6 +324,7 @@ struct joycon_ctlr {
u8 usb_ack_match;
u8 subcmd_ack_match;
bool received_input_report;
+ bool ctlr_removed;
/* factory calibration data */
struct joycon_stick_cal left_stick_cal_x;
@@ -391,10 +392,12 @@ static int joycon_hid_send_sync(struct joycon_ctlr *ctlr, u8 *data, size_t len,
ret = wait_event_timeout(ctlr->wait,
ctlr->received_input_report,
HZ / 4);
+ spin_lock_irqsave(&ctlr->lock, flags);
/* We will still proceed, even with a timeout here */
- if (!ret)
+ if (!ret && !ctlr->ctlr_removed)
hid_warn(ctlr->hdev,
"timeout waiting for input report\n");
+ spin_unlock_irqrestore(&ctlr->lock, flags);
}
ret = __joycon_hid_send(ctlr->hdev, data, len);
@@ -446,6 +449,14 @@ static int joycon_send_subcmd(struct joycon_ctlr *ctlr,
unsigned long flags;
spin_lock_irqsave(&ctlr->lock, flags);
+ /*
+ * If the controller has been removed, just return ENODEV so the LED
+ * subsystem doesn't print invalid errors on removal.
+ */
+ if (ctlr->ctlr_removed) {
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+ return -ENODEV;
+ }
memcpy(subcmd->rumble_data, ctlr->rumble_data[ctlr->rumble_queue_tail],
JC_RUMBLE_DATA_SIZE);
spin_unlock_irqrestore(&ctlr->lock, flags);
@@ -773,10 +784,12 @@ static void joycon_rumble_worker(struct work_struct *work)
mutex_lock(&ctlr->output_mutex);
ret = joycon_enable_rumble(ctlr, true);
mutex_unlock(&ctlr->output_mutex);
- if (ret < 0)
- hid_warn(ctlr->hdev, "Failed to set rumble; e=%d", ret);
+ /* -ENODEV means the controller was just unplugged */
spin_lock_irqsave(&ctlr->lock, flags);
+ if (ret < 0 && ret != -ENODEV && !ctlr->ctlr_removed)
+ hid_warn(ctlr->hdev, "Failed to set rumble; e=%d", ret);
+
ctlr->rumble_msecs = jiffies_to_msecs(jiffies);
if (ctlr->rumble_queue_tail != ctlr->rumble_queue_head) {
if (++ctlr->rumble_queue_tail >= JC_RUMBLE_QUEUE_SIZE)
@@ -1449,9 +1462,17 @@ static int nintendo_hid_probe(struct hid_device *hdev,
static void nintendo_hid_remove(struct hid_device *hdev)
{
struct joycon_ctlr *ctlr = hid_get_drvdata(hdev);
+ unsigned long flags;
hid_dbg(hdev, "remove\n");
+
+ /* Prevent further attempts at sending subcommands. */
+ spin_lock_irqsave(&ctlr->lock, flags);
+ ctlr->ctlr_removed = true;
+ spin_unlock_irqrestore(&ctlr->lock, flags);
+
destroy_workqueue(ctlr->rumble_queue);
+
hid_hw_close(hdev);
hid_hw_stop(hdev);
}
This patch fixes meaningless error output from trying to send subcommands immediately after controller removal. It now disables subcommands as soon as possible on removal. Signed-off-by: Daniel J. Ogorchock <djogorchock@gmail.com> --- drivers/hid/hid-nintendo.c | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-)