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PCI/sysfs: Define SMBIOS label attributes with DEVICE_ATTR*()

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Use DEVICE_ATTR*() to simplify definition of the SMBIOS label attributes.
No functional change intended.

Note that dev_attr_smbios_label requires __ATTR() because the "label"
attribute can be exposed via either ACPI or SMBIOS, and we already have the
ACPI label_show() function in this file.

[bhelgaas: split to separate patch]
Link: https://lore.kernel.org/r/20210416205856.3234481-6-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Krzysztof Wilczyński 2021-04-27 14:18:26 -05:00 committed by Bjorn Helgaas
parent 2ed6494155
commit 4dd7dfa166
1 changed files with 18 additions and 23 deletions
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41
drivers/pci/pci-label.c
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@ -92,8 +92,8 @@ static size_t find_smbios_instance_string(struct pci_dev *pdev, char *buf,
return 0;
}
static umode_t smbios_instance_string_exist(struct kobject *kobj,
struct attribute *attr, int n)
static umode_t smbios_attr_is_visible(struct kobject *kobj, struct attribute *a,
int n)
{
struct device *dev;
struct pci_dev *pdev;
@ -101,12 +101,14 @@ static umode_t smbios_instance_string_exist(struct kobject *kobj,
dev = kobj_to_dev(kobj);
pdev = to_pci_dev(dev);
return find_smbios_instance_string(pdev, NULL, SMBIOS_ATTR_NONE) ?
S_IRUGO : 0;
if (!find_smbios_instance_string(pdev, NULL, SMBIOS_ATTR_NONE))
return 0;
return a->mode;
}
static ssize_t smbioslabel_show(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t smbios_label_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pci_dev *pdev;
pdev = to_pci_dev(dev);
@ -114,9 +116,11 @@ static ssize_t smbioslabel_show(struct device *dev,
return find_smbios_instance_string(pdev, buf,
SMBIOS_ATTR_LABEL_SHOW);
}
static struct device_attribute dev_attr_smbios_label = __ATTR(label, 0444,
smbios_label_show, NULL);
static ssize_t smbiosinstance_show(struct device *dev,
struct device_attribute *attr, char *buf)
static ssize_t index_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct pci_dev *pdev;
pdev = to_pci_dev(dev);
@ -124,26 +128,17 @@ static ssize_t smbiosinstance_show(struct device *dev,
return find_smbios_instance_string(pdev, buf,
SMBIOS_ATTR_INSTANCE_SHOW);
}
static DEVICE_ATTR_RO(index);
static struct device_attribute smbios_attr_label = {
.attr = {.name = "label", .mode = 0444},
.show = smbioslabel_show,
};
static struct device_attribute smbios_attr_instance = {
.attr = {.name = "index", .mode = 0444},
.show = smbiosinstance_show,
};
static struct attribute *smbios_attributes[] = {
&smbios_attr_label.attr,
&smbios_attr_instance.attr,
static struct attribute *smbios_attrs[] = {
&dev_attr_smbios_label.attr,
&dev_attr_index.attr,
NULL,
};
static const struct attribute_group smbios_attr_group = {
.attrs = smbios_attributes,
.is_visible = smbios_instance_string_exist,
.attrs = smbios_attrs,
.is_visible = smbios_attr_is_visible,
};
static int pci_create_smbiosname_file(struct pci_dev *pdev)