[PATCH v2] iio: light: lm3533-als: constify attribute_group structures

From: simran singhal
Date: Thu Mar 30 2017 - 14:40:46 EST


Check for attribute_group structures that are only stored in the
event_attrs filed of iio_info structure. As the event_attrs field of
iio_info structures is constant, so these attribute_group structures can
also be declared constant. Done using coccinelle:

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

@ok1@
identifier r1.i;
position p;
struct iio_info x;
@@
x.event_attrs=&i@p;

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

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
static
+const
struct attribute_group i={...};

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

As the attrs field of iio_info structures is also constant, so these
attribute_group structures can also be declared constant. Done manually.

File size before:
text data bss dec hex filename
5798 2376 0 8174 1fee drivers/iio/light/lm3533-als.o

File size after:
text data bss dec hex filename
5926 2248 0 8174 1fee drivers/iio/light/lm3533-als.o

Signed-off-by: simran singhal <singhalsimran0@xxxxxxxxx>
---
v2:
-make one more attribute_group const.
-change the values of file size after.
-change commit message.

drivers/iio/light/lm3533-als.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index f409c20..0443fd2 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -690,7 +690,7 @@ static struct attribute *lm3533_als_event_attributes[] = {
NULL
};

-static struct attribute_group lm3533_als_event_attribute_group = {
+static const struct attribute_group lm3533_als_event_attribute_group = {
.attrs = lm3533_als_event_attributes
};

@@ -714,7 +714,7 @@ static struct attribute *lm3533_als_attributes[] = {
NULL
};

-static struct attribute_group lm3533_als_attribute_group = {
+static const struct attribute_group lm3533_als_attribute_group = {
.attrs = lm3533_als_attributes
};

--
2.7.4