[media] media: davinci: vpif_capture: move the freeing of irq and global variables to remove()

Ideally the freeing of irq's and the global variables needs to be
done in the remove() rather than module_exit(), this patch moves
the freeing up of irq's and freeing the memory allocated to channel
objects to remove() callback of struct platform_driver.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/davinci/vpif_capture.c

@@ -2159,17 +2159,27 @@ static __init int vpif_probe(struct platform_device *pdev)
  */
 static int vpif_remove(struct platform_device *device)
 {
-	int i;
 	struct channel_obj *ch;
+	struct resource *res;
+	int irq_num, i = 0;
+
+	while ((res = platform_get_resource(device, IORESOURCE_IRQ, i))) {
+		for (irq_num = res->start; irq_num <= res->end; irq_num++)
+			free_irq(irq_num,
+				 (void *)(&vpif_obj.dev[i]->channel_id));
+		i++;
+	}
 
 	v4l2_device_unregister(&vpif_obj.v4l2_dev);
 
+	kfree(vpif_obj.sd);
 	/* un-register device */
 	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
 		/* Get the pointer to the channel object */
 		ch = vpif_obj.dev[i];
 		/* Unregister video device */
 		video_unregister_device(ch->video_dev);
+		kfree(vpif_obj.dev[i]);
 	}
 	return 0;
 }
@@ -2281,24 +2291,7 @@ static __init int vpif_init(void)
  */
 static void vpif_cleanup(void)
 {
-	struct platform_device *pdev;
-	struct resource *res;
-	int irq_num;
-	int i = 0;
-
-	pdev = container_of(vpif_dev, struct platform_device, dev);
-	while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) {
-		for (irq_num = res->start; irq_num <= res->end; irq_num++)
-			free_irq(irq_num,
-				 (void *)(&vpif_obj.dev[i]->channel_id));
-		i++;
-	}
-
 	platform_driver_unregister(&vpif_driver);
-
-	kfree(vpif_obj.sd);
-	for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++)
-		kfree(vpif_obj.dev[i]);
 }
 
 /* Function for module initialization and cleanup */