From cbabee788ff881b87bbaf258caf080b49a61fa43 Mon Sep 17 00:00:00 2001 From: Andrei Emeltchenko Date: Thu, 29 Nov 2012 17:46:07 +0200 Subject: [PATCH] Bluetooth: Process receiving FCS_NONE in L2CAP Conf Rsp Process L2CAP Config rsp Pending with FCS Option 0x00 (No FCS) which is sent by Motorola Windows 7 Bluetooth stack. The trace is shown below (all other options are skipped). ... < ACL data: handle 1 flags 0x00 dlen 48 L2CAP(s): Config req: dcid 0x0043 flags 0x00 clen 36 ... FCS Option 0x00 (No FCS) > ACL data: handle 1 flags 0x02 dlen 48 L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 36 ... FCS Option 0x01 (CRC16 Check) < ACL data: handle 1 flags 0x00 dlen 47 L2CAP(s): Config rsp: scid 0x0043 flags 0x00 result 4 clen 33 Pending ... > ACL data: handle 1 flags 0x02 dlen 50 L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 4 clen 36 Pending ... FCS Option 0x00 (No FCS) < ACL data: handle 1 flags 0x00 dlen 14 L2CAP(s): Config rsp: scid 0x0043 flags 0x00 result 0 clen 0 Success > ACL data: handle 1 flags 0x02 dlen 14 L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 0 Success ... Signed-off-by: Andrei Emeltchenko Signed-off-by: Gustavo Padovan --- net/bluetooth/l2cap_core.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index d22d183ddd45..8c432771d6f9 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -3431,6 +3431,13 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len, l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs), (unsigned long) &efs); break; + + case L2CAP_CONF_FCS: + if (*result == L2CAP_CONF_PENDING) + if (val == L2CAP_FCS_NONE) + set_bit(CONF_NO_FCS_RECV, + &chan->conf_state); + break; } } -- 2.39.2