Bluetooth: L2CAP: Fix auto-allocating LE PSM values

The LE dynamic PSM range is different from BR/EDR (0x0080 - 0x00ff)
and doesn't have requirements relating to parity, so separate checks
are needed.

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

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 39a5149f301085d45d37a94361e2b86486d852bd..eb4f5f24cbe36a1d4f524978d52d8558f4dbde80 100644 (file)
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -197,10 +197,20 @@ int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm)
                chan->sport = psm;
                err = 0;
        } else {
-               u16 p;
+               u16 p, start, end, incr;
+
+               if (chan->src_type == BDADDR_BREDR) {
+                       start = L2CAP_PSM_DYN_START;
+                       end = L2CAP_PSM_AUTO_END;
+                       incr = 2;
+               } else {
+                       start = L2CAP_PSM_LE_DYN_START;
+                       end = L2CAP_PSM_LE_DYN_END;
+                       incr = 1;
+               }
 
                err = -EINVAL;
-               for (p = 0x1001; p < 0x1100; p += 2)
+               for (p = start; p <= end; p += incr)
                        if (!__l2cap_global_chan_by_addr(cpu_to_le16(p), src)) {
                                chan->psm   = cpu_to_le16(p);
                                chan->sport = cpu_to_le16(p);