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drivers/uwb/ie-rcv.c
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/* * Ultra Wide Band * IE Received notification handling. * * Copyright (C) 2008 Cambridge Silicon Radio Ltd. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/errno.h> #include <linux/module.h> #include <linux/device.h> #include <linux/bitmap.h> #include "uwb-internal.h" /* * Process an incoming IE Received notification. */ int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt) { int result = -EINVAL; struct device *dev = &evt->rc->uwb_dev.dev; struct uwb_rc_evt_ie_rcv *iercv; size_t iesize; /* Is there enough data to decode it? */ if (evt->notif.size < sizeof(*iercv)) { dev_err(dev, "IE Received notification: Not enough data to " "decode (%zu vs %zu bytes needed) ", evt->notif.size, sizeof(*iercv)); goto error; } iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb); iesize = le16_to_cpu(iercv->wIELength); dev_dbg(dev, "IE received, element ID=%d ", iercv->IEData[0]); if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) { dev_warn(dev, "unhandled Relinquish Request IE "); } return 0; error: return result; } |