drm/udl: dma-buf: Constify dma_buf_ops structures.

dma_buf_ops are not supposed to change at runtime. All functions
working with dma_buf_ops provided by <linux/dma-buf.h> work with
const dma_buf_ops. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
   2002	    112	      0	   2114	    842	drivers/gpu/drm/udl/udl_dmabuf.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   2114	      0	      0	   2114	    842	drivers/gpu/drm/udl/udl_dmabuf.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/cb4dfac90e85e2270779331f8cb10b635042bad7.1498912415.git.arvind.yadav.cs@gmail.com

diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
index 2e031a894813678d1e7d84facc90520c1e8d40b8..2867ed155ff6d09974791a69f198d0290209ec40 100644 (file)
--- a/drivers/gpu/drm/udl/udl_dmabuf.c
+++ b/drivers/gpu/drm/udl/udl_dmabuf.c
@@ -186,7 +186,7 @@ static int udl_dmabuf_mmap(struct dma_buf *dma_buf,
        return -EINVAL;
 }
 
-static struct dma_buf_ops udl_dmabuf_ops = {
+static const struct dma_buf_ops udl_dmabuf_ops = {
        .attach                 = udl_attach_dma_buf,
        .detach                 = udl_detach_dma_buf,
        .map_dma_buf            = udl_map_dma_buf,