diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/dmi-id.c | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c index 2678098d450..a7bd87d5289 100644 --- a/drivers/firmware/dmi-id.c +++ b/drivers/firmware/dmi-id.c @@ -13,21 +13,35 @@ #include <linux/device.h> #include <linux/autoconf.h> +struct dmi_device_attribute{ + struct device_attribute dev_attr; + int field; +}; +#define to_dmi_dev_attr(_dev_attr) \ + container_of(_dev_attr, struct dmi_device_attribute, dev_attr) + #define DEFINE_DMI_ATTR(_name, _mode, _show) \ static struct device_attribute sys_dmi_##_name##_attr = \ __ATTR(_name, _mode, _show, NULL); -#define DEFINE_DMI_ATTR_WITH_SHOW(_name, _mode, _field) \ -static ssize_t sys_dmi_##_name##_show(struct device *dev, \ - struct device_attribute *attr, \ - char *page) \ -{ \ - ssize_t len; \ - len = scnprintf(page, PAGE_SIZE, "%s\n", dmi_get_system_info(_field)); \ - page[len-1] = '\n'; \ - return len; \ -} \ -DEFINE_DMI_ATTR(_name, _mode, sys_dmi_##_name##_show); +static ssize_t sys_dmi_field_show(struct device *dev, + struct device_attribute *attr, + char *page) +{ + int field = to_dmi_dev_attr(attr)->field; + ssize_t len; + len = scnprintf(page, PAGE_SIZE, "%s\n", dmi_get_system_info(field)); + page[len-1] = '\n'; + return len; +} + +#define DMI_ATTR(_name, _mode, _show, _field) \ + { .dev_attr = __ATTR(_name, _mode, _show, NULL), \ + .field = _field } + +#define DEFINE_DMI_ATTR_WITH_SHOW(_name, _mode, _field) \ +static struct dmi_device_attribute sys_dmi_##_name##_attr = \ + DMI_ATTR(_name, _mode, sys_dmi_field_show, _field); DEFINE_DMI_ATTR_WITH_SHOW(bios_vendor, 0444, DMI_BIOS_VENDOR); DEFINE_DMI_ATTR_WITH_SHOW(bios_version, 0444, DMI_BIOS_VERSION); @@ -160,7 +174,7 @@ static struct device *dmi_dev; #define ADD_DMI_ATTR(_name, _field) \ if (dmi_get_system_info(_field)) \ - sys_dmi_attributes[i++] = & sys_dmi_##_name##_attr.attr; + sys_dmi_attributes[i++] = &sys_dmi_##_name##_attr.dev_attr.attr; extern int dmi_available; |