Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 121 insertions, 0 deletions

diff --git a/kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c b/kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c
new file mode 100644
index 000000000..5c8f65134
--- /dev/null
+++ b/kernel/drivers/media/usb/dvb-usb/dvb-usb-urb.c
@@ -0,0 +1,121 @@
+/* dvb-usb-urb.c is part of the DVB USB library.
+ *
+ * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
+ * see dvb-usb-init.c for copyright information.
+ *
+ * This file keeps functions for initializing and handling the
+ * USB and URB stuff.
+ */
+#include "dvb-usb-common.h"
+
+int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
+	u16 rlen, int delay_ms)
+{
+	int actlen,ret = -ENOMEM;
+
+	if (!d || wbuf == NULL || wlen == 0)
+		return -EINVAL;
+
+	if (d->props.generic_bulk_ctrl_endpoint == 0) {
+		err("endpoint for generic control not specified.");
+		return -EINVAL;
+	}
+
+	if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
+		return ret;
+
+	deb_xfer(">>> ");
+	debug_dump(wbuf,wlen,deb_xfer);
+
+	ret = usb_bulk_msg(d->udev,usb_sndbulkpipe(d->udev,
+			d->props.generic_bulk_ctrl_endpoint), wbuf,wlen,&actlen,
+			2000);
+
+	if (ret)
+		err("bulk message failed: %d (%d/%d)",ret,wlen,actlen);
+	else
+		ret = actlen != wlen ? -1 : 0;
+
+	/* an answer is expected, and no error before */
+	if (!ret && rbuf && rlen) {
+		if (delay_ms)
+			msleep(delay_ms);
+
+		ret = usb_bulk_msg(d->udev,usb_rcvbulkpipe(d->udev,
+				d->props.generic_bulk_ctrl_endpoint_response ?
+				d->props.generic_bulk_ctrl_endpoint_response :
+				d->props.generic_bulk_ctrl_endpoint),rbuf,rlen,&actlen,
+				2000);
+
+		if (ret)
+			err("recv bulk message failed: %d",ret);
+		else {
+			deb_xfer("<<< ");
+			debug_dump(rbuf,actlen,deb_xfer);
+		}
+	}
+
+	mutex_unlock(&d->usb_mutex);
+	return ret;
+}
+EXPORT_SYMBOL(dvb_usb_generic_rw);
+
+int dvb_usb_generic_write(struct dvb_usb_device *d, u8 *buf, u16 len)
+{
+	return dvb_usb_generic_rw(d,buf,len,NULL,0,0);
+}
+EXPORT_SYMBOL(dvb_usb_generic_write);
+
+static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buffer, size_t length)
+{
+	struct dvb_usb_adapter *adap = stream->user_priv;
+	if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
+		dvb_dmx_swfilter(&adap->demux, buffer, length);
+}
+
+static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buffer, size_t length)
+{
+	struct dvb_usb_adapter *adap = stream->user_priv;
+	if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
+		dvb_dmx_swfilter_204(&adap->demux, buffer, length);
+}
+
+static void dvb_usb_data_complete_raw(struct usb_data_stream *stream,
+				      u8 *buffer, size_t length)
+{
+	struct dvb_usb_adapter *adap = stream->user_priv;
+	if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
+		dvb_dmx_swfilter_raw(&adap->demux, buffer, length);
+}
+
+int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap)
+{
+	int i, ret = 0;
+	for (i = 0; i < adap->props.num_frontends; i++) {
+
+		adap->fe_adap[i].stream.udev      = adap->dev->udev;
+		if (adap->props.fe[i].caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS)
+			adap->fe_adap[i].stream.complete =
+				dvb_usb_data_complete_204;
+		else
+		if (adap->props.fe[i].caps & DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD)
+			adap->fe_adap[i].stream.complete =
+				dvb_usb_data_complete_raw;
+		else
+		adap->fe_adap[i].stream.complete  = dvb_usb_data_complete;
+		adap->fe_adap[i].stream.user_priv = adap;
+		ret = usb_urb_init(&adap->fe_adap[i].stream,
+				   &adap->props.fe[i].stream);
+		if (ret < 0)
+			break;
+	}
+	return ret;
+}
+
+int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap)
+{
+	int i;
+	for (i = 0; i < adap->props.num_frontends; i++)
+		usb_urb_exit(&adap->fe_adap[i].stream);
+	return 0;
+}