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NFC: Handle SHDLC RSET frames from an SHDLC connected chip

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shdlc reset may leave HCI in an inconsistent state by loosing parts of
HCI frames. Handle this case by reporting an unrecoverable error to HCI.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Eric Lapuyade 2012-05-02 11:23:11 +02:00 committed by John W. Linville
parent d3b4044531
commit 5018e490c3
1 changed files with 4 additions and 4 deletions
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8
net/nfc/hci/shdlc.c
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@ -404,12 +404,12 @@ static void nfc_shdlc_rcv_u_frame(struct nfc_shdlc *shdlc,
r = nfc_shdlc_connect_send_ua(shdlc);
nfc_shdlc_connect_complete(shdlc, r);
}
} else if (shdlc->state > SHDLC_NEGOCIATING) {
} else if (shdlc->state == SHDLC_CONNECTED) {
/*
* TODO: Chip wants to reset link
* send ua, empty skb lists, reset counters
* propagate info to HCI layer
* Chip wants to reset link. This is unexpected and
* unsupported.
*/
shdlc->hard_fault = -ECONNRESET;
}
break;
case U_FRAME_UA: