leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

media: vb2 dma-sg: Constify dma_buf_ops structures

Browse Source 
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
   5238	    112	      4	   5354	   14ea drivers/media/v4l2-core/videobuf2-dma-sg.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   5358	      0	      4	   5362	   14f2 drivers/media/v4l2-core/videobuf2-dma-sg.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Arvind Yadav 2017-07-01 08:18:24 -04:00 committed by Mauro Carvalho Chehab
parent 59310b7a06
commit efaf515f0d
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/v4l2-core/videobuf2-dma-sg.c
View File

@ -500,7 +500,7 @@ static int vb2_dma_sg_dmabuf_ops_mmap(struct dma_buf *dbuf,
return vb2_dma_sg_mmap(dbuf->priv, vma);
}
static struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
static const struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
.attach = vb2_dma_sg_dmabuf_ops_attach,
.detach = vb2_dma_sg_dmabuf_ops_detach,
.map_dma_buf = vb2_dma_sg_dmabuf_ops_map,