Bluetooth: Make hci_le_conn_update return the store hint

The caller of hci_le_conn_update is directly interested in knowing what
the best value is for the store_hint parameter of the corresponding
mgmt event. Since hci_le_conn_update knows whether there were stored
parameters that were updated or not we can have it return an initial
store_hint value to the caller.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index f4a2f50..32c8e51 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1368,8 +1368,8 @@ struct hci_sec_filter {
 #define hci_req_lock(d)                mutex_lock(&d->req_lock)
 #define hci_req_unlock(d)      mutex_unlock(&d->req_lock)
 
-void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
-                                       u16 latency, u16 to_multiplier);
+u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
+                     u16 to_multiplier);
 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
                                                        __u8 ltk[16]);
 

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index d00aaf9..0d579d0 100644 (file)
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -213,8 +213,8 @@ bool hci_setup_sync(struct hci_conn *conn, __u16 handle)
        return true;
 }
 
-void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
-                       u16 latency, u16 to_multiplier)
+u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
+                     u16 to_multiplier)
 {
        struct hci_dev *hdev = conn->hdev;
        struct hci_conn_params *params;
@@ -242,6 +242,11 @@ void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
        cp.max_ce_len           = cpu_to_le16(0x0000);
 
        hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp);
+
+       if (params)
+               return 0x01;
+
+       return 0x00;
 }
 
 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,