Commit 4f00bfb3 authored by Tim Jiang's avatar Tim Jiang Committed by Marcel Holtmann
Browse files

Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc. 



This is btsoc timing issue, after host start to downloading bt firmware,
ep2 need time to switch from function acl to function dfu, so host add
20ms delay as workaround.

Signed-off-by: default avatarTim Jiang <tjiang@codeaurora.org>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent ca17a5cc

drivers/bluetooth/btusb.c

+5 −0
Original line number Diff line number Diff line
@@ -4080,6 +4080,11 @@ static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 
	sent += size;

	count -= size;



	/* ep2 need time to switch from function acl to function dfu,

	 * so we add 20ms delay here.

	 */

	msleep(20);



	while (count) {

		size = min_t(size_t, count, QCA_DFU_PACKET_LEN);