linux/include/linux/irqreturn.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_IRQRETURN_H
#define _LINUX_IRQRETURN_H

/**
 * enum irqreturn - irqreturn type values
 * @IRQ_NONE:		interrupt was not from this device or was not handled
 * @IRQ_HANDLED:	interrupt was handled by this device
 * @IRQ_WAKE_THREAD:	handler requests to wake the handler thread
 */
enum irqreturn { … };

irqreturn_t;
#define IRQ_RETVAL(x) …

#endif