iio: common: ssp_sensors: accel: constify iio_info structures

Check for iio_info structures that are only stored in the info field of a
iio_dev structure.  This field is declared const, so iio_info structures
that have this property can be declared as const also.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct iio_info i@p = { ... };

@ok@
identifier r.i;
struct iio_dev e;
position p;
@@
e.info = &i@p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct iio_info e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct iio_info i = { ... };
// </smpl>

The result of size on this file before the change is:
   text	      data     bss     dec         hex	  filename
   1265        344       0    1609         649
   drivers/iio/accel/ssp_accel_sensor.o

and after the change it is:
   text	     data        bss	    dec	    hex	filename
   1425	      192          0       1617     651
   drivers/iio/accel/ssp_accel_sensor.o

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/accel/ssp_accel_sensor.c b/drivers/iio/accel/ssp_accel_sensor.c
index 4ae05fce9f24bc4c5ee106ae2bb8361596ba34de..31db00970fa0a2f79068a1b84273fc248dafd874 100644 (file)
--- a/drivers/iio/accel/ssp_accel_sensor.c
+++ b/drivers/iio/accel/ssp_accel_sensor.c
@@ -74,7 +74,7 @@ static int ssp_accel_write_raw(struct iio_dev *indio_dev,
        return -EINVAL;
 }
 
-static struct iio_info ssp_accel_iio_info = {
+static const struct iio_info ssp_accel_iio_info = {
        .read_raw = &ssp_accel_read_raw,
        .write_raw = &ssp_accel_write_raw,
 };