Commit cde9dde6 authored Oct 17, 2019 by Jeffrey Hugo Committed by Marcel Holtmann Oct 17, 2019

Bluetooth: hci_qca: Add delay for wcn3990 stability



On the msm8998 mtp, the response to the baudrate change command is never
received.  On the Lenovo Miix 630, the response to the baudrate change
command is corrupted - "Frame reassembly failed (-84)".

Adding a 50ms delay before re-enabling flow to receive the baudrate change
command response from the wcn3990 addesses both issues, and allows
bluetooth to become functional.

Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

parent b9a2562f

drivers/bluetooth/hci_qca.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1156,8 +1156,10 @@ static int qca_set_speed(struct hci_uart *hu, enum qca_speed_type speed_type)
		host_set_baudrate(hu, speed);

		error:
		if (qca_is_wcn399x(soc_type))
		if (qca_is_wcn399x(soc_type)) {
		msleep(50);
		hci_uart_set_flow_control(hu, false);
		}

		if (soc_type == QCA_WCN3990) {
		/* Wait for the controller to send the vendor event

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