/*
 * Freescale QUICC Engine USB Host Controller Driver
 *
 * Copyright (c) Freescale Semicondutor, Inc. 2006.
 *               Shlomi Gridish <gridish@freescale.com>
 *               Jerry Huang <Chang-Ming.Huang@freescale.com>
 * Copyright (c) Logic Product Development, Inc. 2007
 *               Peter Barada <peterb@logicpd.com>
 * Copyright (c) MontaVista Software, Inc. 2008.
 *               Anton Vorontsov <avorontsov@ru.mvista.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/usb.h>
#include <linux/usb/hcd.h>
#include "fhci.h"

static void init_td(struct td *td)
{
	memset(td, 0, sizeof(*td));
	INIT_LIST_HEAD(&td->node);
	INIT_LIST_HEAD(&td->frame_lh);
}

static void init_ed(struct ed *ed)
{
	memset(ed, 0, sizeof(*ed));
	INIT_LIST_HEAD(&ed->td_list);
	INIT_LIST_HEAD(&ed->node);
}

static struct td *get_empty_td(struct fhci_hcd *fhci)
{
	struct td *td;

	if (!list_empty(&fhci->empty_tds)) {
		td = list_entry(fhci->empty_tds.next, struct td, node);
		list_del(fhci->empty_tds.next);
	} else {
		td = kmalloc(sizeof(*td), GFP_ATOMIC);
		if (!td)
			fhci_err(fhci, "No memory to allocate to TD\n");
		else
			init_td(td);
	}

	return td;
}

void fhci_recycle_empty_td(struct fhci_hcd *fhci, struct td *td)
{
	init_td(td);
	list_add(&td->node, &fhci->empty_tds);
}

struct ed *fhci_get_empty_ed(struct fhci_hcd *fhci)
{
	struct ed *ed;

	if (!list_empty(&fhci->empty_eds)) {
		ed = list_entry(fhci->empty_eds.next, struct ed, node);
		list_del(fhci->empty_eds.next);
	} else {
		ed = kmalloc(sizeof(*ed), GFP_ATOMIC);
		if (!ed)
			fhci_err(fhci, "No memory to allocate to ED\n");
		else
			init_ed(ed);
	}

	return ed;
}

void fhci_recycle_empty_ed(struct fhci_hcd *fhci, struct ed *ed)
{
	init_ed(ed);
	list_add(&ed->node, &fhci->empty_eds);
}

struct td *fhci_td_fill(struct fhci_hcd *fhci, struct urb *urb,
			struct urb_priv *urb_priv, struct ed *ed, u16 index,
			enum fhci_ta_type type, int toggle, u8 *data, u32 len,
			u16 interval, u16 start_frame, bool ioc)
{
	struct td *td = get_empty_td(fhci);

	if (!td)
		return NULL;

	td->urb = urb;
	td->ed = ed;
	td->type = type;
	td->toggle = toggle;
	td->data = data;
	td->len = len;
	td->iso_index = index;
	td->interval = interval;
	td->start_frame = start_frame;
	td->ioc = ioc;
	td->status = USB_TD_OK;

	urb_priv->tds[index] = td;

	return td;
}
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/atm?h=nds-private-remove&amp;id=90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3'>atm</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/atm/br2684.c?h=nds-private-remove&amp;id=90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3'>br2684.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/atm/br2684.c?h=nds-private-remove&amp;id=90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
ion><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Patrick Lai &lt;plai@codeaurora.org&gt;</td><td class='right'>2016-12-31 22:44:39 -0800</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2017-01-06 18:19:10 +0000</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events?id=9f169b9f52a4afccdab7a7d2311b0c53a78a1e6b'>9f169b9f52a4afccdab7a7d2311b0c53a78a1e6b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/trace/events?id=9f169b9f52a4afccdab7a7d2311b0c53a78a1e6b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=9f169b9f52a4afccdab7a7d2311b0c53a78a1e6b'>717a662fd0cb8931ecafc165b7637926577be5b3</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/trace/events?id=9f169b9f52a4afccdab7a7d2311b0c53a78a1e6b'>include/trace/events</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events?id=a5de5b74a50113564a1e0850e2da96c37c35e55d'>a5de5b74a50113564a1e0850e2da96c37c35e55d</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events?id=9f169b9f52a4afccdab7a7d2311b0c53a78a1e6b&amp;id2=a5de5b74a50113564a1e0850e2da96c37c35e55d'>diff</a>)</td></tr></table>
<div class='commit-subject'>ASoC: dpcm: Avoid putting stream state to STOP when FE stream is paused</div><div class='commit-msg'>When multiple front-ends are using the same back-end, putting state of a
front-end to STOP state upon receiving pause command will result in backend
stream getting released by DPCM framework unintentionally. In order to
avoid backend to be released when another active front-end stream is
present, put the stream state to PAUSED state instead of STOP state.

Signed-off-by: Patrick Lai &lt;plai@codeaurora.org&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=9f169b9f52a4afccdab7a7d2311b0c53a78a1e6b'>Diffstat</a> (limited to 'include/trace/events')</div><table summary='diffstat' class='diffstat'>