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path: root/drivers/usb/gadget/function/u_midi.h
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/*
 * u_midi.h
 *
 * Utility definitions for the midi function
 *
 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
 *		http://www.samsung.com
 *
 * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
 *
 * 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.
 */

#ifndef U_MIDI_H
#define U_MIDI_H

#include <linux/usb/composite.h>

struct f_midi_opts {
	struct usb_function_instance	func_inst;
	int				index;
	char				*id;
	bool				id_allocated;
	unsigned int			in_ports;
	unsigned int			out_ports;
	unsigned int			buflen;
	unsigned int			qlen;

	/*
	 * Protect the data form concurrent access by read/write
	 * and create symlink/remove symlink.
	 */
	 struct mutex			lock;
	 int				refcnt;
};

#endif /* U_MIDI_H */

ctivate operations symmetric
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 <efault@gmx.de> Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos
Diffstat (limited to 'drivers/usb/usbip/usbip_common.c')