--- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -55,6 +55,7 @@ #include #include #include +#include extern void check_wait(void); extern asmlinkage void r4k_wait(void); @@ -1617,6 +1618,8 @@ void __cpuinit per_cpu_trap_init(bool is if (cpu_has_mips_r2) { cp0_compare_irq_shift = CAUSEB_TI - CAUSEB_IP; cp0_compare_irq = (read_c0_intctl() >> INTCTLB_IPTI) & 7; + if (get_c0_compare_irq) + cp0_compare_irq = get_c0_compare_irq(); cp0_perfcount_irq = (read_c0_intctl() >> INTCTLB_IPPCI) & 7; if (cp0_perfcount_irq == cp0_compare_irq) cp0_perfcount_irq = -1; --- a/arch/mips/include/asm/time.h +++ b/arch/mips/include/asm/time.h @@ -51,6 +51,7 @@ extern int (*perf_irq)(void); * Initialize the calling CPU's compare interrupt as clockevent device */ extern unsigned int __weak get_c0_compare_int(void); +extern unsigned int __weak get_c0_compare_irq(void); extern int r4k_clockevent_init(void); static inline int mips_clockevent_init(void)