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- /* 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)
- */
- typedef int irqreturn_t;
- #define IRQ_NONE (0)
- #define IRQ_HANDLED (1)
- #define IRQ_RETVAL(x) ((x) != 0)
- #endif
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