Bluetooth: Fix L2CAP error return used for failed channel lookups

The EFAULT error should only be used for memory address related errors
and ENOENT might be needed for other purposes than invalid CID errors.
This patch fixes the l2cap_config_req, l2cap_connect_create_rsp and
l2cap_create_channel_req handlers to use the unique EBADSLT error to
indicate failed lookups on a given CID.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 0b8a2704928e47560242c5e35f7d688529abb954..eb60cf78af7743897e6cbeb299788c059e93c35d 100644 (file)
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3884,13 +3884,13 @@ static int l2cap_connect_create_rsp(struct l2cap_conn *conn,
        if (scid) {
                chan = __l2cap_get_chan_by_scid(conn, scid);
                if (!chan) {
-                       err = -EFAULT;
+                       err = -EBADSLT;
                        goto unlock;
                }
        } else {
                chan = __l2cap_get_chan_by_ident(conn, cmd->ident);
                if (!chan) {
-                       err = -EFAULT;
+                       err = -EBADSLT;
                        goto unlock;
                }
        }
@@ -3978,7 +3978,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn,
 
        chan = l2cap_get_chan_by_scid(conn, dcid);
        if (!chan)
-               return -ENOENT;
+               return -EBADSLT;
 
        if (chan->state != BT_CONFIG && chan->state != BT_CONNECT2) {
                struct l2cap_cmd_rej_cid rej;
@@ -4438,7 +4438,7 @@ static int l2cap_create_channel_req(struct l2cap_conn *conn,
                hs_hcon = hci_conn_hash_lookup_ba(hdev, AMP_LINK, conn->dst);
                if (!hs_hcon) {
                        hci_dev_put(hdev);
-                       return -EFAULT;
+                       return -EBADSLT;
                }
 
                BT_DBG("mgr %p bredr_chan %p hs_hcon %p", mgr, chan, hs_hcon);