#ifndef SOUND_FIREWIRE_CMP_H_INCLUDED
#define SOUND_FIREWIRE_CMP_H_INCLUDED

#include <linux/mutex.h>
#include <linux/types.h>
#include "iso-resources.h"

struct fw_unit;

enum cmp_direction {
	CMP_INPUT = 0,
	CMP_OUTPUT,
};

/**
 * struct cmp_connection - manages an isochronous connection to a device
 * @speed: the connection's actual speed
 *
 * This structure manages (using CMP) an isochronous stream between the local
 * computer and a device's input plug (iPCR) and output plug (oPCR).
 *
 * There is no corresponding oPCR created on the local computer, so it is not
 * possible to overlay connections on top of this one.
 */
struct cmp_connection {
	int speed;
	/* private: */
	bool connected;
	struct mutex mutex;
	struct fw_iso_resources resources;
	__be32 last_pcr_value;
	unsigned int pcr_index;
	unsigned int max_speed;
	enum cmp_direction direction;
};

int cmp_connection_init(struct cmp_connection *connection,
			struct fw_unit *unit,
			enum cmp_direction direction,
			unsigned int pcr_index);
int cmp_connection_check_used(struct cmp_connection *connection, bool *used);
void cmp_connection_destroy(struct cmp_connection *connection);

int cmp_connection_establish(struct cmp_connection *connection,
			     unsigned int max_payload);
int cmp_connection_update(struct cmp_connection *connection);
void cmp_connection_break(struct cmp_connection *connection);

#endif
='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<a href='/cgit.cgi/linux/net-next.git/?h=nds-private-remove'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/sound/pci/ali5451/ali5451.c?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/sound/pci/ali5451/ali5451.c?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ali5451/ali5451.c?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/ali5451/ali5451.c?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/pci/ali5451/ali5451.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>pci</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ali5451?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>ali5451</a>/<a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ali5451/ali5451.c?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>ali5451.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='7a7b5df84b6b4e5d599c7289526eed96541a0654'/><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>Johan Hovold &lt;johan@kernel.org&gt;</td><td class='right'>2017-01-30 11:26:38 +0100</td></tr>
<tr><th>committer</th><td>Jiri Kosina &lt;jkosina@suse.cz&gt;</td><td class='right'>2017-01-31 12:59:32 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ali5451/ali5451.c?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>7a7b5df84b6b4e5d599c7289526eed96541a0654</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/pci/ali5451/ali5451.c?id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>cf7514c7ddf4410fe37ca9099a2785e1cf08fa7d</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/pci/ali5451/ali5451.c?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>sound/pci/ali5451/ali5451.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/ali5451/ali5451.c?h=nds-private-remove&amp;id=877a021e08ccb6434718c0cc781fdf943c884cc0'>877a021e08ccb6434718c0cc781fdf943c884cc0</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/ali5451/ali5451.c?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654&amp;id2=877a021e08ccb6434718c0cc781fdf943c884cc0'>diff</a>)</td></tr></table>
<div class='commit-subject'>HID: cp2112: fix sleep-while-atomic</div><div class='commit-msg'>A recent commit fixing DMA-buffers on stack added a shared transfer
buffer protected by a spinlock. This is broken as the USB HID request
callbacks can sleep. Fix this up by replacing the spinlock with a mutex.

Fixes: 1ffb3c40ffb5 ("HID: cp2112: make transfer buffers DMA capable")
Cc: stable &lt;stable@vger.kernel.org&gt;	# 4.9
Signed-off-by: Johan Hovold &lt;johan@kernel.org&gt;
Reviewed-by: Benjamin Tissoires &lt;benjamin.tissoires@redhat.com&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=7a7b5df84b6b4e5d599c7289526eed96541a0654'>Diffstat</a> (limited to 'sound/pci/ali5451/ali5451.c')</div><table summary='diffstat' class='diffstat'>