Bluetooth: btusb: Do not call kfree_skb() under spin_lock_irqsave()

It is not allowed to call kfree_skb() from hardware interrupt
context or with hardware interrupts being disabled.
So replace kfree_skb() with dev_kfree_skb_irq() under
spin_lock_irqsave(). Compile tested only.

Fixes: baac6276c0a9 ("Bluetooth: btusb: handle mSBC audio over USB Endpoints")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index e98f5fc..82597ab 100644 (file)
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2162,7 +2162,7 @@ static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
                 * alternate setting.
                 */
                spin_lock_irqsave(&data->rxlock, flags);
-               kfree_skb(data->sco_skb);
+               dev_kfree_skb_irq(data->sco_skb);
                data->sco_skb = NULL;
                spin_unlock_irqrestore(&data->rxlock, flags);