[PATCH 1/2][SRU][OEM-5.13/OEM-5.14/Impish] UBUNTU: SAUCE: Bluetooth: btusb: Handle download_firmware failure cases

[You-Sheng Yang]

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

BugLink: https://bugs.launchpad.net/bugs/1954300

For Mediatek chipset, it can not enabled if there are something wrong
in btmtk_setup_firmware_79xx(). Thus, the process must be terminated
and returned error code.

Fixes: fc342c4dc4087 ("Bluetooth: btusb: Add protocol support for MediaTek MT7921U USB devices")
Co-developed-by: Sean Wang <sean.wang at mediatek.com>
Signed-off-by: Sean Wang <sean.wang at mediatek.com>
Signed-off-by: Mark Chen <mark-yw.chen at mediatek.com>
Signed-off-by: Marcel Holtmann <marcel at holtmann.org>
(backported from
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=00c0ee9850b7b0cb7c40b8daba806ae2245e59d4)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
 drivers/bluetooth/btusb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 70754138ebff..96b2401106d5 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -3792,6 +3792,10 @@ static int btusb_mtk_setup(struct hci_dev *hdev)
 			"mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
 			 dev_id & 0xffff, (fw_version & 0xff) + 1);
 		err = btusb_mtk_setup_firmware_79xx(hdev, fw_bin_name);
+		if (err < 0) {
+			bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
+			return err;
+		}
 
 		/* Enable Bluetooth protocol */
 		param = 1;
-- 
2.32.0