[ARM] Fix more missing irqreturn_t and remove a static no_action func.

arch/arm/mach-footbridge/isa-irq.c

@@ -84,10 +84,6 @@ static struct irqchip isa_hi_chip = {
 	.unmask = isa_unmask_pic_hi_irq,
 };
 
-static void no_action(int irq, void *dev_id, struct pt_regs *regs)
-{
-}
-
 static void
 isa_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
 {

arch/arm/mach-integrator/pci_v3.c

@@ -441,7 +441,7 @@ v3_pci_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 	return 1;
 }
 
-static void v3_irq(int irq, void *devid, struct pt_regs *regs)
+static irqreturn_t v3_irq(int irq, void *devid, struct pt_regs *regs)
 {
 #ifdef CONFIG_DEBUG_LL
 	unsigned long pc = instruction_pointer(regs);
@@ -469,6 +469,7 @@ static void v3_irq(int irq, void *devid, struct pt_regs *regs)
 		printascii(buf);
 	}
 #endif
+	return IRQ_HANDLED;
 }
 
 int __init pci_v3_setup(int nr, struct pci_sys_data *sys)

arch/arm/mach-sa1100/dma.c

@@ -42,7 +42,7 @@ static sa1100_dma_t dma_chan[SA1100_DMA_CHANNELS];
 static spinlock_t dma_list_lock;
 
 
-static void dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
 {
 	dma_regs_t *dma_regs = dev_id;
 	sa1100_dma_t *dma = dma_chan + (((u_int)dma_regs >> 5) & 7);
@@ -60,6 +60,7 @@ static void dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
 		if (status & DCSR_DONEB)
 			dma->callback(dma->data);
 	}
+	return IRQ_HANDLED;
 }