[PATCH] Bluetooth: btusb: Handle download_firmware failure cases.

[mark-yw.chen at mediatek.com]

From: mark-yw.chen <mark-yw.chen at mediatek.com>

For Mediatek chipset, if there are no firmware bin or command_timeout,
the process should be terminated in btusb_mtk_setup().

Signed-off-by: mark-yw.chen <mark-yw.chen at mediatek.com>
Change-Id: I99f1d7b72fa70643d9123e7e6cdc8d0b4369ce52
---
 drivers/bluetooth/btmtk.c | 1 +
 drivers/bluetooth/btusb.c | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index c2ee5c4b975a..526dfdf1fe01 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -121,6 +121,7 @@ int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname,
 				} else {
 					bt_dev_err(hdev, "Failed wmt patch dwnld status (%d)",
 						   status);
+					err = -EIO;
 					goto err_release_fw;
 				}
 			}
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index ab169fc673ea..3ea04b1d0750 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2554,6 +2554,10 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 			 dev_id & 0xffff, (fw_version & 0xff) + 1);
 		err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
 						btusb_mtk_hci_wmt_sync);
+		if (err < 0) {
+			bt_dev_err(hdev, "Failed to setup firmware (%d)", err);
+			return err;
+		}
 
 		/* It's Device EndPoint Reset Option Register */
 		btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
-- 
2.18.0