/*
 * Copyright (C) ST-Ericsson AB 2010
 * Author:	Sjur Brendeland
 * License terms: GNU General Public License (GPL) version 2
 */

#define pr_fmt(fmt) KBUILD_MODNAME ":%s(): " fmt, __func__

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <net/caif/caif_layer.h>
#include <net/caif/cfsrvl.h>
#include <net/caif/cfpkt.h>

#define container_obj(layr) ((struct cfsrvl *) layr)

static int cfvidl_receive(struct cflayer *layr, struct cfpkt *pkt);
static int cfvidl_transmit(struct cflayer *layr, struct cfpkt *pkt);

struct cflayer *cfvidl_create(u8 channel_id, struct dev_info *dev_info)
{
	struct cfsrvl *vid = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
	if (!vid)
		return NULL;
	caif_assert(offsetof(struct cfsrvl, layer) == 0);

	cfsrvl_init(vid, channel_id, dev_info, false);
	vid->layer.receive = cfvidl_receive;
	vid->layer.transmit = cfvidl_transmit;
	snprintf(vid->layer.name, CAIF_LAYER_NAME_SZ - 1, "vid1");
	return &vid->layer;
}

static int cfvidl_receive(struct cflayer *layr, struct cfpkt *pkt)
{
	u32 videoheader;
	if (cfpkt_extr_head(pkt, &videoheader, 4) < 0) {
		pr_err("Packet is erroneous!\n");
		cfpkt_destroy(pkt);
		return -EPROTO;
	}
	return layr->up->receive(layr->up, pkt);
}

static int cfvidl_transmit(struct cflayer *layr, struct cfpkt *pkt)
{
	struct cfsrvl *service = container_obj(layr);
	struct caif_payload_info *info;
	u32 videoheader = 0;
	int ret;

	if (!cfsrvl_ready(service, &ret)) {
		cfpkt_destroy(pkt);
		return ret;
	}

	cfpkt_add_head(pkt, &videoheader, 4);
	/* Add info for MUX-layer to route the packet out */
	info = cfpkt_info(pkt);
	info->channel_id = service->layer.id;
	info->dev_info = &service->dev_info;
	return layr->dn->transmit(layr->dn, pkt);
}
Makefile'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/sound/usb/bcd2000/Makefile?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/sound/usb/bcd2000/Makefile?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/usb/bcd2000/Makefile?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/usb/bcd2000/Makefile'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/usb?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/bcd2000?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>bcd2000</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/bcd2000/Makefile?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>Makefile</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='aaaec6fc755447a1d056765b11b24d8ff2b81366'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><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>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 19:03:21 +0100</td></tr>
<tr><th>committer</th><td>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 20:22:18 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/bcd2000/Makefile?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>aaaec6fc755447a1d056765b11b24d8ff2b81366</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/usb/bcd2000/Makefile?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>a7f4167960ee1df86739905b6ccdeb95465bfe5f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/usb/bcd2000/Makefile?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>sound/usb/bcd2000/Makefile</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/usb/bcd2000/Makefile?id=08d85f3ea99f1eeafc4e8507936190e86a16ee8c'>08d85f3ea99f1eeafc4e8507936190e86a16ee8c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/usb/bcd2000/Makefile?id=aaaec6fc755447a1d056765b11b24d8ff2b81366&amp;id2=08d85f3ea99f1eeafc4e8507936190e86a16ee8c'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/irq: Make irq activate operations symmetric</div><div class='commit-msg'>The recent commit which prevents double activation of interrupts unearthed
interesting code in x86. The code (ab)uses irq_domain_activate_irq() to
reconfigure an already activated interrupt. That trips over the prevention
code now.

Fix it by deactivating the interrupt before activating the new configuration.

Fixes: 08d85f3ea99f1 "irqdomain: Avoid activating interrupts more than once"
Reported-and-tested-by: Mike Galbraith &lt;efault@gmx.de&gt;
Reported-and-tested-by: Borislav Petkov &lt;bp@alien8.de&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Andrey Ryabinin &lt;aryabinin@virtuozzo.com&gt;
Cc: Marc Zyngier &lt;marc.zyngier@arm.com&gt;
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos

</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>Diffstat</a> (limited to 'sound/usb/bcd2000/Makefile')</div><table summary='diffstat' class='diffstat'>