soc: qcom: fix endianness for QMI header

The members of QMI header have to be swapped on big endian platforms. Use
__le16 types instead of u16 ones.

Signed-off-by: Alexander Wilhelm <alexander.wilhelm@westermo.com>
Fixes: 9b8a11e ("soc: qcom: Introduce QMI encoder/decoder")
Fixes: 3830d07 ("soc: qcom: Introduce QMI helpers")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250522143530.3623809-3-alexander.wilhelm@westermo.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: alewi-westermo

drivers/soc/qcom/qmi_encdec.c

@@ -776,9 +776,9 @@ void *qmi_encode_message(int type, unsigned int msg_id, size_t *len,
 
 	hdr = msg;
 	hdr->type = type;
-	hdr->txn_id = txn_id;
-	hdr->msg_id = msg_id;
-	hdr->msg_len = msglen;
+	hdr->txn_id = cpu_to_le16(txn_id);
+	hdr->msg_id = cpu_to_le16(msg_id);
+	hdr->msg_len = cpu_to_le16(msglen);
 
 	*len = sizeof(*hdr) + msglen;
 

drivers/soc/qcom/qmi_interface.c

@@ -400,7 +400,7 @@ static void qmi_invoke_handler(struct qmi_handle *qmi, struct sockaddr_qrtr *sq,
 
 	for (handler = qmi->handlers; handler->fn; handler++) {
 		if (handler->type == hdr->type &&
-		    handler->msg_id == hdr->msg_id)
+		    handler->msg_id == le16_to_cpu(hdr->msg_id))
 			break;
 	}
 
@@ -488,7 +488,7 @@ static void qmi_handle_message(struct qmi_handle *qmi,
 	/* If this is a response, find the matching transaction handle */
 	if (hdr->type == QMI_RESPONSE) {
 		mutex_lock(&qmi->txn_lock);
-		txn = idr_find(&qmi->txns, hdr->txn_id);
+		txn = idr_find(&qmi->txns, le16_to_cpu(hdr->txn_id));
 
 		/* Ignore unexpected responses */
 		if (!txn) {
@@ -514,7 +514,7 @@ static void qmi_handle_message(struct qmi_handle *qmi,
 	} else {
 		/* Create a txn based on the txn_id of the incoming message */
 		memset(&tmp_txn, 0, sizeof(tmp_txn));
-		tmp_txn.id = hdr->txn_id;
+		tmp_txn.id = le16_to_cpu(hdr->txn_id);
 
 		qmi_invoke_handler(qmi, sq, &tmp_txn, buf, len);
 	}

include/linux/soc/qcom/qmi.h

@@ -24,9 +24,9 @@ struct socket;
  */
 struct qmi_header {
 	u8 type;
-	u16 txn_id;
-	u16 msg_id;
-	u16 msg_len;
+	__le16 txn_id;
+	__le16 msg_id;
+	__le16 msg_len;
 } __packed;
 
 #define QMI_REQUEST	0