On 01/13/2017 07:48 PM, Bhumika Goyal wrote:
> 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@xxxxxxxxx>
thanks applied.
> ---
> 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,
>
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