[PATCH v1 1/3] Bluetooth: btmtk: improve mt79xx firmware setup retry flow

[Chris Lu <chris.lu@mediatek.com>]

If retries are exhausted, driver should not do futher operation.
During mt79xx firmware download process, if the retry count reaches0,
driver will return an -EIO error and release the firmware resources.

Signed-off-by: Chris Lu <chris.lu@mediatek.com>
---
 drivers/bluetooth/btmtk.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index a8c520dc09e1..b0f87b04046e 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -205,6 +205,12 @@ int btmtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname,
 				}
 			}
 
+			/* If retry exhausted goto err_release_fw */
+			if (retry == 0) {
+				err = -EIO;
+				goto err_release_fw;
+			}
+
 			fw_ptr += section_offset;
 			wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
 			wmt_params.status = NULL;
-- 
2.45.2