Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1558680

[PATCH] s390: virtio: constify virtio_config_ops structures

Show all headers | View raw

Declare virtio_config_ops structure as const as it is only stored in the
config field of a virtio_device structure. This field is of type const, so
virtio_config_ops structures having this property can be declared const.
Done using Coccinelle:

@r1 disable optional_qualifier@
identifier i;
position p;
@@
static struct virtio_config_ops i@p={...};

@ok1@
identifier r1.i;
position p;
struct virtio_ccw_device x;
@@
x.vdev.config=&i@p

@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct virtio_config_ops i;

File size before and after applying the patch remains the same.
text	data	bss	dec	hex   filename
9235	296	32928	42459	a5db  drivers/s390/virtio/virtio_ccw.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
---
 drivers/s390/virtio/virtio_ccw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index 639ed4e..6508bf4 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -920,7 +920,7 @@ static void virtio_ccw_set_status(struct virtio_device *vdev, u8 status)
 	kfree(ccw);
 }
 
-static struct virtio_config_ops virtio_ccw_config_ops = {
+static const struct virtio_config_ops virtio_ccw_config_ops = {
 	.get_features = virtio_ccw_get_features,
 	.finalize_features = virtio_ccw_finalize_features,
 	.get = virtio_ccw_get_config,
-- 
1.9.1

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH] s390: virtio: constify virtio_config_ops structures Bhumika Goyal <bhumirks@gmail.com> - 2017-01-13 20:00 +0100
  Re: [PATCH] s390: virtio: constify virtio_config_ops structures Christian Borntraeger <borntraeger@de.ibm.com> - 2017-01-16 10:20 +0100

csiph-web