1 /* irqreturn.h */ 2 #ifndef _LINUX_IRQRETURN_H 3 #define _LINUX_IRQRETURN_H 4 5 /* 6 * For 2.4.x compatibility, 2.4.x can use 7 * 8 * typedef void irqreturn_t; 9 * #define IRQ_NONE 10 * #define IRQ_HANDLED 11 * #define IRQ_RETVAL(x) 12 * 13 * To mix old-style and new-style irq handler returns. 14 * 15 * IRQ_NONE means we didn't handle it. 16 * IRQ_HANDLED means that we did have a valid interrupt and handled it. 17 * IRQ_RETVAL(x) selects on the two depending on x being non-zero (for handled) 18 */ 19 typedef int irqreturn_t; 20 21 #define IRQ_NONE (0) 22 #define IRQ_HANDLED (1) 23 #define IRQ_RETVAL(x) ((x) != 0) 24 25 #endif 26
