Bluetooth: hci_intel: Give priority to LPM packets
Change the way to insert LPM packets into the txq.
Use skb_queue_head instead of skb_queue_tail to always prioritise LPM
packets over potential tx queue content.
Signed-off-by: Loic Poulain <loic.poulain@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c
index b17386b..249e096 100644
--- a/drivers/bluetooth/hci_intel.c
+++ b/drivers/bluetooth/hci_intel.c
@@ -190,7 +190,8 @@
set_bit(STATE_LPM_TRANSACTION, &intel->flags);
- skb_queue_tail(&intel->txq, skb);
+ /* LPM flow is a priority, enqueue packet at list head */
+ skb_queue_head(&intel->txq, skb);
hci_uart_tx_wakeup(hu);
intel_wait_lpm_transaction(hu);
@@ -233,7 +234,8 @@
set_bit(STATE_LPM_TRANSACTION, &intel->flags);
- skb_queue_tail(&intel->txq, skb);
+ /* LPM flow is a priority, enqueue packet at list head */
+ skb_queue_head(&intel->txq, skb);
hci_uart_tx_wakeup(hu);
intel_wait_lpm_transaction(hu);
@@ -272,7 +274,8 @@
sizeof(lpm_resume_ack));
bt_cb(skb)->pkt_type = HCI_LPM_PKT;
- skb_queue_tail(&intel->txq, skb);
+ /* LPM flow is a priority, enqueue packet at list head */
+ skb_queue_head(&intel->txq, skb);
hci_uart_tx_wakeup(hu);
bt_dev_dbg(hu->hdev, "Resumed by controller");