linux-kernel - [PATCH v4] Bluetooth: hci_qca: Cleanup on all setup failures

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Message-Id: <20260106094310.784564-1-jinwang.li@oss.qualcomm.com>
Date: Tue,  6 Jan 2026 17:43:10 +0800
From: Jinwang Li <jinwang.li@....qualcomm.com>
To: Bartosz Golaszewski <brgl@...nel.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Balakrishna Godavarthi <quic_bgodavar@...cinc.com>,
        Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
Cc: linux-arm-msm@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        linux-kernel@...r.kernel.org, cheng.jiang@....qualcomm.com,
        quic_chezhou@...cinc.com, wei.deng@....qualcomm.com,
        shuai.zhang@....qualcomm.com, mengshi.wu@....qualcomm.com,
        jinwang.li@....qualcomm.com
Subject: [PATCH v4] Bluetooth: hci_qca: Cleanup on all setup failures

The setup process previously combined error handling and retry gating
under one condition. As a result, the final failed attempt exited
without performing cleanup.

Update the failure path to always perform power and port cleanup on
setup failure, and reopen the port only when retrying.

Fixes: 9e80587aba4c ("Bluetooth: hci_qca: Enhance retry logic in qca_setup")
Signed-off-by: Jinwang Li <jinwang.li@....qualcomm.com>
---
V3 -> V4: 
- Add 'Fixes:' tag.
- Link to v3
  https://lore.kernel.org/all/20260105141427.196411-1-jinwang.li@oss.qualcomm.com/

V2 -> V3:
- Update git name.
- Link to v2
  https://lore.kernel.org/all/20251226102707.3449789-1-jinwang.li@oss.qualcomm.com/

V1 -> V2:
- Only reopen the serdev port when retrying.
- Return on the final failure.
- Update commit.
- Link to v1
  https://lore.kernel.org/all/20251222123824.3000167-1-jinwang.li@oss.qualcomm.com/

 drivers/bluetooth/hci_qca.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index b54350317a43..8414fa75e540 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -2045,19 +2045,24 @@ static int qca_setup(struct hci_uart *hu)
 	}
 
 out:
-	if (ret && retries < MAX_INIT_RETRIES) {
-		bt_dev_warn(hdev, "Retry BT power ON:%d", retries);
+	if (ret) {
 		qca_power_shutdown(hu);
-		if (hu->serdev) {
+		if (hu->serdev)
 			serdev_device_close(hu->serdev);
-			ret = serdev_device_open(hu->serdev);
-			if (ret) {
-				bt_dev_err(hdev, "failed to open port");
-				return ret;
+
+		if (retries < MAX_INIT_RETRIES) {
+			bt_dev_warn(hdev, "Retry BT power ON:%d", retries);
+			if (hu->serdev) {
+				ret = serdev_device_open(hu->serdev);
+				if (ret) {
+					bt_dev_err(hdev, "failed to open port");
+					return ret;
+				}
 			}
+			retries++;
+			goto retry;
 		}
-		retries++;
-		goto retry;
+		return ret;
 	}
 
 	/* Setup bdaddr */
-- 
2.34.1