Commit 599ece4f authored by Zijun Hu's avatar Zijun Hu Committed by Marcel Holtmann
Browse files

Bluetooth: btusb: Improve stability for QCA devices 



WCN6855 2.1 will reset to apply firmware downloaded, so wait
a moment for reset done then go ahead to improve stability.

Signed-off-by: default avatarZijun Hu <quic_zijuhu@quicinc.com>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 467e98cd

drivers/bluetooth/btusb.c

+8 −0
Original line number Diff line number Diff line
@@ -2999,6 +2999,7 @@ static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev, 
#define QCA_PATCH_UPDATED	0x80

#define QCA_DFU_TIMEOUT		3000

#define QCA_FLAG_MULTI_NVM      0x80

#define QCA_BT_RESET_WAIT_MS    100



#define WCN6855_2_0_RAM_VERSION_GF 0x400c1200

#define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
@@ -3325,6 +3326,13 @@ static int btusb_setup_qca(struct hci_dev *hdev) 
		err = btusb_setup_qca_load_nvm(hdev, &ver, info);

		if (err < 0)

			return err;



		/* WCN6855 2.1 will reset to apply firmware downloaded here, so

		 * wait ~100ms for reset Done then go ahead, otherwise, it maybe

		 * cause potential enable failure.

		 */

		if (info->rom_version == 0x00130201)

			msleep(QCA_BT_RESET_WAIT_MS);

	}



	return 0;