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platform/wmi: Make sysfs attributes const

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The sysfs core supports const attributes. Use this to mark all
sysfs attributes as const so that they can be placed into read-only
memory for better security.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20260610203453.816254-9-W_Armin@gmx.de
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Armin Wolf 2026-06-10 22:34:52 +02:00 committed by Ilpo Järvinen
parent b79ad5e8ba
commit c3cbac4be0
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GPG Key ID: 59AC4F6153E5CE31
1 changed files with 18 additions and 11 deletions
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29
drivers/platform/wmi/core.c
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@ -858,7 +858,8 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
return sysfs_emit(buf, "wmi:%pUL\n", &wblock->gblock.guid);
}
static DEVICE_ATTR_RO(modalias);
static const DEVICE_ATTR_RO(modalias);
static ssize_t guid_show(struct device *dev, struct device_attribute *attr,
char *buf)
@ -867,7 +868,8 @@ static ssize_t guid_show(struct device *dev, struct device_attribute *attr,
return sysfs_emit(buf, "%pUL\n", &wblock->gblock.guid);
}
static DEVICE_ATTR_RO(guid);
static const DEVICE_ATTR_RO(guid);
static ssize_t instance_count_show(struct device *dev,
struct device_attribute *attr, char *buf)
@ -876,7 +878,8 @@ static ssize_t instance_count_show(struct device *dev,
return sysfs_emit(buf, "%d\n", (int)wblock->gblock.instance_count);
}
static DEVICE_ATTR_RO(instance_count);
static const DEVICE_ATTR_RO(instance_count);
static ssize_t expensive_show(struct device *dev,
struct device_attribute *attr, char *buf)
@ -886,9 +889,10 @@ static ssize_t expensive_show(struct device *dev,
return sysfs_emit(buf, "%d\n",
(wblock->gblock.flags & ACPI_WMI_EXPENSIVE) != 0);
}
static DEVICE_ATTR_RO(expensive);
static struct attribute *wmi_attrs[] = {
static const DEVICE_ATTR_RO(expensive);
static const struct attribute * const wmi_attrs[] = {
&dev_attr_modalias.attr,
&dev_attr_guid.attr,
&dev_attr_instance_count.attr,
@ -904,9 +908,10 @@ static ssize_t notify_id_show(struct device *dev, struct device_attribute *attr,
return sysfs_emit(buf, "%02X\n", (unsigned int)wblock->gblock.notify_id);
}
static DEVICE_ATTR_RO(notify_id);
static struct attribute *wmi_event_attrs[] = {
static const DEVICE_ATTR_RO(notify_id);
static const struct attribute * const wmi_event_attrs[] = {
&dev_attr_notify_id.attr,
NULL
};
@ -920,7 +925,8 @@ static ssize_t object_id_show(struct device *dev, struct device_attribute *attr,
return sysfs_emit(buf, "%c%c\n", wblock->gblock.object_id[0],
wblock->gblock.object_id[1]);
}
static DEVICE_ATTR_RO(object_id);
static const DEVICE_ATTR_RO(object_id);
static ssize_t setable_show(struct device *dev, struct device_attribute *attr,
char *buf)
@ -929,16 +935,17 @@ static ssize_t setable_show(struct device *dev, struct device_attribute *attr,
return sysfs_emit(buf, "%d\n", (int)wdev->setable);
}
static DEVICE_ATTR_RO(setable);
static struct attribute *wmi_data_attrs[] = {
static const DEVICE_ATTR_RO(setable);
static const struct attribute * const wmi_data_attrs[] = {
&dev_attr_object_id.attr,
&dev_attr_setable.attr,
NULL
};
ATTRIBUTE_GROUPS(wmi_data);
static struct attribute *wmi_method_attrs[] = {
static const struct attribute * const wmi_method_attrs[] = {
&dev_attr_object_id.attr,
NULL
};