2017-07-19 05:26:38

by Arvind Yadav

[permalink] [raw]
Subject: [PATCH] omapfb: panel-sony-acx565akm: constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions
working with attribute_group provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
text data bss dec hex filename
5227 560 0 5787 169b panel-sony-acx565akm

File size After adding 'const':
text data bss dec hex filename
5291 496 0 5787 169b panel-sony-acx565akm.o

Signed-off-by: Arvind Yadav <[email protected]>
---
drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c b/drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c
index 468560a..f2c2fef 100644
--- a/drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c
+++ b/drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c
@@ -509,7 +509,7 @@ static DEVICE_ATTR(cabc_available_modes, S_IRUGO,
NULL,
};

-static struct attribute_group bldev_attr_group = {
+static const struct attribute_group bldev_attr_group = {
.attrs = bldev_attrs,
};

--
1.9.1


Subject: Re: [PATCH] omapfb: panel-sony-acx565akm: constify attribute_group structures.

On Wednesday, July 19, 2017 10:55:57 AM Arvind Yadav wrote:
> attribute_group are not supposed to change at runtime. All functions
> working with attribute_group provided by <linux/sysfs.h> work
> with const attribute_group. So mark the non-const structs as const.
>
> File size before:
> text data bss dec hex filename
> 5227 560 0 5787 169b panel-sony-acx565akm
>
> File size After adding 'const':
> text data bss dec hex filename
> 5291 496 0 5787 169b panel-sony-acx565akm.o
>
> Signed-off-by: Arvind Yadav <[email protected]>

Patch queued for 4.14, thanks.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics