Now probe_irq_mask is in kernel/irq/autoprobe.c, but it is not exported. Please export it as past. Here is a patch (or kernel/irq/autoprobe.c should be fixed?) Thank you. --- linux-mips/arch/mips/kernel/mips_ksyms.c 2004-09-22 13:27:59.000000000 +0900 +++ linux/arch/mips/kernel/mips_ksyms.c 2004-12-27 14:37:12.524814712 +0900 @@ -60,3 +60,5 @@ EXPORT_SYMBOL(csum_partial); EXPORT_SYMBOL(invalid_pte_table); +extern unsigned int probe_irq_mask(unsigned long val); +EXPORT_SYMBOL(probe_irq_mask); --- Atsushi Nemoto