/* irqreturn.h */#ifndef _LINUX_IRQRETURN_H#define _LINUX_IRQRETURN_H/* * For 2.4.x compatibility, 2.4.x can use * * typedef void irqreturn_t; * #define IRQ_NONE * #define IRQ_HANDLED * #define IRQ_RETVAL(x) * * To mix old-style and new-style irq handler returns. * * IRQ_NONE means we didn't handle it. * IRQ_HANDLED means that we did have a valid interrupt and handled it. * IRQ_RETVAL(x) selects on the two depending on x being non-zero (for handled) */typedefintirqreturn_t;#define IRQ_NONE (0)#define IRQ_HANDLED (1)#define IRQ_RETVAL(x) ((x) != 0)#endif
