I've try kernel without memset() on the board - is ok, board boot. All drivers works fine. Than I grep the kernel sources: [root@windmill linux]# grep -nri "memset(irq_desc" arch/ arch/mips/au1000/common/irq.c:449: memset(irq_desc, 0, sizeof(irq_desc)); arch/mips/ite-boards/generic/irq.c:184: memset(irq_desc, 0, sizeof(irq_desc)); [root@windmill linux]# Only 2 matches! Does we needs memset() at all? And if some one try to initialize irq_desc from start_kernel() before arch_init_irq() call, then following arch_init_irq() call discard all that initialization.
Description: Removes useless memset() call. Signed-off-by: Konstantin Baydarov<kbaidarov@xxxxxxxxxxxxx> Index: linux_up/linux/arch/mips/au1000/common/irq.c =================================================================== --- linux_up.orig/linux/arch/mips/au1000/common/irq.c +++ linux_up/linux/arch/mips/au1000/common/irq.c @@ -446,7 +446,6 @@ void __init arch_init_irq(void) extern int au1xxx_ic0_nr_irqs; cp0_status = read_c0_status(); - memset(irq_desc, 0, sizeof(irq_desc)); set_except_vector(0, au1000_IRQ); /* Initialize interrupt controllers to a safe state.
