arch/sh/drivers/dma/{dma-g2,dmabrg}.c: ensure arguments to request_irq and free_irq are compatible

Convert calls to free_irq so that the second argument is the same as the
last argument of the corresponding call to request_irq.  Without this
property, free_irq does nothing.

In the case of dmabrg.c the change is merely cosmetic - changing 0 to NULL.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/drivers/dma/dma-g2.c

@@ -181,14 +181,14 @@ static int __init g2_dma_init(void)
 
 	ret = register_dmac(&g2_dma_info);
 	if (unlikely(ret != 0))
-		free_irq(HW_EVENT_G2_DMA, 0);
+		free_irq(HW_EVENT_G2_DMA, &g2_dma_info);
 
 	return ret;
 }
 
 static void __exit g2_dma_exit(void)
 {
-	free_irq(HW_EVENT_G2_DMA, 0);
+	free_irq(HW_EVENT_G2_DMA, &g2_dma_info);
 	unregister_dmac(&g2_dma_info);
 }
 

arch/sh/drivers/dma/dmabrg.c

@@ -189,8 +189,8 @@ static int __init dmabrg_init(void)
 	if (ret == 0)
 		return ret;
 
-	free_irq(DMABRGI1, 0);
-out1:	free_irq(DMABRGI0, 0);
+	free_irq(DMABRGI1, NULL);
+out1:	free_irq(DMABRGI0, NULL);
 out0:	kfree(dmabrg_handlers);
 	return ret;
 }