From: Chris Lu <chris.lu@mediatek.com>
Date: Tue, 3 Feb 2026 06:25:08 +0000 (+0800)
Subject: Bluetooth: btmtk: improve mt79xx firmware setup retry flow
X-Git-Tag: v7.1-rc1~173^2~12^2~55
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=54f1f020e9f4a087779cc4d96a7c86f47d0c6797;p=thirdparty%2Fkernel%2Flinux.git

Bluetooth: btmtk: improve mt79xx firmware setup retry flow

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>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---

diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index fa7533578f85c..0ada5a12130dc 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;