linux-kernel - [PATCH 2/3] wifi: ath12k: Add missing qmi_txn

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Message-ID: <20240109-qmi-cleanup-v1-2-607b10858566@quicinc.com>
Date: Tue, 9 Jan 2024 09:51:04 -0800
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Kalle Valo <kvalo@...nel.org>, Jeff Johnson <quic_jjohnson@...cinc.com>
CC: <ath12k@...ts.infradead.org>, <linux-wireless@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] wifi: ath12k: Add missing qmi_txn_cancel() calls

Per the QMI documentation "A client calling qmi_txn_init() must call
either qmi_txn_wait() or qmi_txn_cancel() to free up the allocated
resources."

Unfortunately, in most of the ath12k messaging functions, when
qmi_send_request() fails, the function returns without performing the
necessary cleanup. So update those functions to call qmi_txn_cancel()
when qmi_send_request() fails.

No functional changes, compile tested only.
---
 drivers/net/wireless/ath/ath12k/qmi.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c
index 180e86c2a10c..1f2df2e3fbce 100644
--- a/drivers/net/wireless/ath/ath12k/qmi.c
+++ b/drivers/net/wireless/ath/ath12k/qmi.c
@@ -1977,6 +1977,7 @@ static int ath12k_qmi_host_cap_send(struct ath12k_base *ab)
 			       QMI_WLANFW_HOST_CAP_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_host_cap_req_msg_v01_ei, &req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath12k_warn(ab, "Failed to send host capability request,err = %d\n", ret);
 		goto out;
 	}
@@ -2040,6 +2041,7 @@ static int ath12k_qmi_fw_ind_register_send(struct ath12k_base *ab)
 			       QMI_WLANFW_IND_REGISTER_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_ind_register_req_msg_v01_ei, req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath12k_warn(ab, "Failed to send indication register request, err = %d\n",
 			    ret);
 		goto out;
@@ -2114,6 +2116,7 @@ static int ath12k_qmi_respond_fw_mem_request(struct ath12k_base *ab)
 			       QMI_WLANFW_RESPOND_MEM_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_respond_mem_req_msg_v01_ei, req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath12k_warn(ab, "qmi failed to respond memory request, err = %d\n",
 			    ret);
 		goto out;
@@ -2229,6 +2232,7 @@ static int ath12k_qmi_request_target_cap(struct ath12k_base *ab)
 			       QMI_WLANFW_CAP_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_cap_req_msg_v01_ei, &req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath12k_warn(ab, "qmi failed to send target cap request, err = %d\n",
 			    ret);
 		goto out;
@@ -2572,6 +2576,7 @@ static int ath12k_qmi_wlanfw_m3_info_send(struct ath12k_base *ab)
 			       QMI_WLANFW_M3_INFO_REQ_MSG_V01_MAX_MSG_LEN,
 			       qmi_wlanfw_m3_info_req_msg_v01_ei, &req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath12k_warn(ab, "qmi failed to send M3 information request, err = %d\n",
 			    ret);
 		goto out;
@@ -2618,6 +2623,7 @@ static int ath12k_qmi_wlanfw_mode_send(struct ath12k_base *ab,
 			       QMI_WLANFW_WLAN_MODE_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_wlan_mode_req_msg_v01_ei, &req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath12k_warn(ab, "qmi failed to send mode request, mode: %d, err = %d\n",
 			    mode, ret);
 		goto out;
@@ -2709,6 +2715,7 @@ static int ath12k_qmi_wlanfw_wlan_cfg_send(struct ath12k_base *ab)
 			       QMI_WLANFW_WLAN_CFG_REQ_MSG_V01_MAX_LEN,
 			       qmi_wlanfw_wlan_cfg_req_msg_v01_ei, req);
 	if (ret < 0) {
+		qmi_txn_cancel(&txn);
 		ath12k_warn(ab, "qmi failed to send wlan config request, err = %d\n",
 			    ret);
 		goto out;

-- 
2.42.0