V4L/DVB: videobuf: Remove videobuf_mapping start and end fields

The fields are assigned but never used, remove them.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/videobuf-dma-contig.c

@@ -280,8 +280,6 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
 		return -ENOMEM;
 
 	buf->map = map;
-	map->start = vma->vm_start;
-	map->end = vma->vm_end;
 	map->q = q;
 
 	buf->baddr = vma->vm_start;

drivers/media/video/videobuf-dma-sg.c

@@ -608,8 +608,6 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
 	}
 
 	map->count    = 1;
-	map->start    = vma->vm_start;
-	map->end      = vma->vm_end;
 	map->q        = q;
 	vma->vm_ops   = &videobuf_vm_ops;
 	vma->vm_flags |= VM_DONTEXPAND | VM_RESERVED;

drivers/media/video/videobuf-vmalloc.c

@@ -245,8 +245,6 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q,
 		return -ENOMEM;
 
 	buf->map = map;
-	map->start = vma->vm_start;
-	map->end   = vma->vm_end;
 	map->q     = q;
 
 	buf->baddr = vma->vm_start;

include/media/videobuf-core.h

@@ -54,8 +54,6 @@ struct videobuf_queue;
 
 struct videobuf_mapping {
 	unsigned int count;
-	unsigned long start;
-	unsigned long end;
 	struct videobuf_queue *q;
 };