abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.

/*
 * FCBM timer definitions
 */

#ifndef __FCBM_TIMER_I
#define __FCBM_TIMER_I

#define	FCBM_TIMER_CHG_UPD	RVF_TIMER_0
#define	FCBM_TIMER_DSPL_OFF	RVF_TIMER_1

#define	FCBM_CHG_UPD_INTERVAL	1000	/* ms */
#define	FCBM_DISPLAY_SECS	10	/* seconds */

#endif	/* include guard */