889 static void irq_setup_forced_threading(struct irqaction *new)  in irq_setup_forced_threading()  argument
893 	if (new->flags & (IRQF_NO_THREAD | IRQF_PERCPU | IRQF_ONESHOT))  in irq_setup_forced_threading()
896 	new->flags |= IRQF_ONESHOT;  in irq_setup_forced_threading()
898 	if (!new->thread_fn) {  in irq_setup_forced_threading()
899 		set_bit(IRQTF_FORCED_THREAD, &new->thread_flags);  in irq_setup_forced_threading()
900 		new->thread_fn = new->handler;  in irq_setup_forced_threading()
901 		new->handler = irq_default_primary_handler;  in irq_setup_forced_threading()
910 __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)  in __setup_irq()  argument
931 		if (!new->thread_fn) {  in __setup_irq()
940 		new->handler = irq_nested_primary_handler;  in __setup_irq()
943 			irq_setup_forced_threading(new);  in __setup_irq()
951 	if (new->thread_fn && !nested) {  in __setup_irq()
954 		t = kthread_create(irq_thread, new, "irq/%d-%s", irq,  in __setup_irq()
955 				   new->name);  in __setup_irq()
966 		new->thread = t;  in __setup_irq()
976 		set_bit(IRQTF_AFFINITY, &new->thread_flags);  in __setup_irq()
994 		new->flags &= ~IRQF_ONESHOT;  in __setup_irq()
1010 		if (!((old->flags & new->flags) & IRQF_SHARED) ||  in __setup_irq()
1011 		    ((old->flags ^ new->flags) & IRQF_TRIGGER_MASK) ||  in __setup_irq()
1012 		    ((old->flags ^ new->flags) & IRQF_ONESHOT))  in __setup_irq()
1017 		    (new->flags & IRQF_PERCPU))  in __setup_irq()
1039 	if (new->flags & IRQF_ONESHOT) {  in __setup_irq()
1068 		new->thread_mask = 1 << ffz(thread_mask);  in __setup_irq()
1070 	} else if (new->handler == irq_default_primary_handler &&  in __setup_irq()
1097 		if (new->flags & IRQF_TRIGGER_MASK) {  in __setup_irq()
1099 					new->flags & IRQF_TRIGGER_MASK);  in __setup_irq()
1109 		if (new->flags & IRQF_PERCPU) {  in __setup_irq()
1114 		if (new->flags & IRQF_ONESHOT)  in __setup_irq()
1124 		if (new->flags & IRQF_NOBALANCING) {  in __setup_irq()
1132 	} else if (new->flags & IRQF_TRIGGER_MASK) {  in __setup_irq()
1133 		unsigned int nmsk = new->flags & IRQF_TRIGGER_MASK;  in __setup_irq()
1142 	new->irq = irq;  in __setup_irq()
1143 	*old_ptr = new;  in __setup_irq()
1164 	if (new->thread)  in __setup_irq()
1165 		wake_up_process(new->thread);  in __setup_irq()
1168 	new->dir = NULL;  in __setup_irq()
1169 	register_handler_proc(irq, new);  in __setup_irq()
1175 	if (!(new->flags & IRQF_PROBE_SHARED)) {  in __setup_irq()
1177 		       irq, new->flags, new->name, old->flags, old->name);  in __setup_irq()
1189 	if (new->thread) {  in __setup_irq()
1190 		struct task_struct *t = new->thread;  in __setup_irq()
1192 		new->thread = NULL;  in __setup_irq()