From: Zhao Qunqin <zhaoqunqin@loongson.cn> LoongArch inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IBQ4JL CVE: NA -------------------------------- There are suspend, resume and suspend before hibernation, Loongson need to wait until the previous resume is completely over before the last suspending. Otherwise, it may cause S4 suspend failure in Loongson platform. Signed-off-by: Zhao Qunqin <zhaoqunqin@loongson.cn> Change-Id: Ia4e6924d934d467a139f43e236c1156db609b71a --- drivers/bluetooth/btusb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index fe5e30662017..736c29187635 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -4645,6 +4645,9 @@ static int btusb_suspend(struct usb_interface *intf, pm_message_t message) if (data->suspend_count++) return 0; +#ifdef CONFIG_LOONGARCH + mdelay(1); +#endif spin_lock_irq(&data->txlock); if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { set_bit(BTUSB_SUSPENDING, &data->flags); -- 2.43.0