* [PATCH] HID: wacom: Constify attribute_groups
@ 2020-11-24 23:01 Rikard Falkeborn
2020-11-25 13:18 ` Jiri Kosina
0 siblings, 1 reply; 2+ messages in thread
From: Rikard Falkeborn @ 2020-11-24 23:01 UTC (permalink / raw)
To: Jiri Kosina, Benjamin Tissoires
Cc: linux-input, linux-kernel, Rikard Falkeborn
These are never modified, so make them const to allow the compiler to put
them in read-only memory. It also allows the compiler to shrink the
resulting module with ~900 bytes, test-built with gcc 10.2 on x86_64.
text data bss dec hex filename
204377 42832 576 247785 3c7e9 drivers/hid/wacom_old.ko
204240 42064 576 246880 3c460 drivers/hid/wacom_new.ko
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
---
drivers/hid/wacom_sys.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index cd71e7133944..045c464228d9 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -1173,7 +1173,7 @@ static struct attribute *cintiq_led_attrs[] = {
NULL
};
-static struct attribute_group cintiq_led_attr_group = {
+static const struct attribute_group cintiq_led_attr_group = {
.name = "wacom_led",
.attrs = cintiq_led_attrs,
};
@@ -1194,7 +1194,7 @@ static struct attribute *intuos4_led_attrs[] = {
NULL
};
-static struct attribute_group intuos4_led_attr_group = {
+static const struct attribute_group intuos4_led_attr_group = {
.name = "wacom_led",
.attrs = intuos4_led_attrs,
};
@@ -1205,7 +1205,7 @@ static struct attribute *intuos5_led_attrs[] = {
NULL
};
-static struct attribute_group intuos5_led_attr_group = {
+static const struct attribute_group intuos5_led_attr_group = {
.name = "wacom_led",
.attrs = intuos5_led_attrs,
};
@@ -1216,13 +1216,13 @@ static struct attribute *generic_led_attrs[] = {
NULL
};
-static struct attribute_group generic_led_attr_group = {
+static const struct attribute_group generic_led_attr_group = {
.name = "wacom_led",
.attrs = generic_led_attrs,
};
struct wacom_sysfs_group_devres {
- struct attribute_group *group;
+ const struct attribute_group *group;
struct kobject *root;
};
@@ -1238,7 +1238,7 @@ static void wacom_devm_sysfs_group_release(struct device *dev, void *res)
static int __wacom_devm_sysfs_create_group(struct wacom *wacom,
struct kobject *root,
- struct attribute_group *group)
+ const struct attribute_group *group)
{
struct wacom_sysfs_group_devres *devres;
int error;
@@ -1264,7 +1264,7 @@ static int __wacom_devm_sysfs_create_group(struct wacom *wacom,
}
static int wacom_devm_sysfs_create_group(struct wacom *wacom,
- struct attribute_group *group)
+ const struct attribute_group *group)
{
return __wacom_devm_sysfs_create_group(wacom, &wacom->hdev->dev.kobj,
group);
@@ -1847,7 +1847,7 @@ static struct attribute *remote##SET_ID##_serial_attrs[] = { \
&remote##SET_ID##_mode_attr.attr, \
NULL \
}; \
-static struct attribute_group remote##SET_ID##_serial_group = { \
+static const struct attribute_group remote##SET_ID##_serial_group = { \
.name = NULL, \
.attrs = remote##SET_ID##_serial_attrs, \
}
--
2.29.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] HID: wacom: Constify attribute_groups
2020-11-24 23:01 [PATCH] HID: wacom: Constify attribute_groups Rikard Falkeborn
@ 2020-11-25 13:18 ` Jiri Kosina
0 siblings, 0 replies; 2+ messages in thread
From: Jiri Kosina @ 2020-11-25 13:18 UTC (permalink / raw)
To: Rikard Falkeborn; +Cc: Benjamin Tissoires, linux-input, linux-kernel
On Wed, 25 Nov 2020, Rikard Falkeborn wrote:
> These are never modified, so make them const to allow the compiler to put
> them in read-only memory. It also allows the compiler to shrink the
> resulting module with ~900 bytes, test-built with gcc 10.2 on x86_64.
>
> text data bss dec hex filename
> 204377 42832 576 247785 3c7e9 drivers/hid/wacom_old.ko
> 204240 42064 576 246880 3c460 drivers/hid/wacom_new.ko
Applied, thanks Rikard.
--
Jiri Kosina
SUSE Labs
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