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authorKrzysztof Wilczyński <kw@linux.com>2021-04-27 10:49:16 -0500
committerBjorn Helgaas <bhelgaas@google.com>2021-04-29 10:07:31 -0500
commit506140f9c06b0d136669ae7795e0264c9f21c1a7 (patch)
tree139066ce2714416f283ff87383ec631e97a0f8b9 /drivers/pci/pci-sysfs.c
parent4dd7dfa166d220a245ee21f499bb1084bc249393 (diff)
PCI/sysfs: Convert "index", "acpi_index", "label" to static attributes
The "label", "index", and "acpi_index" sysfs attributes show firmware label information about the device. If the ACPI Device Name _DSM is implemented for the device, we have: label Device name (optional, may be null) acpi_index Instance number (unique under \_SB scope) When there is no ACPI _DSM and SMBIOS provides an Onboard Devices structure for the device, we have: label Reference Designation, e.g., a silkscreen label index Device Type Instance Previously these attributes were dynamically created either by pci_bus_add_device() or the pci_sysfs_init() initcall, but since they don't need to be created or removed dynamically, we can use a static attribute so the device model takes care of addition and removal automatically. Convert "label", "index", and "acpi_index" to static attributes. Presence of the ACPI _DSM (device_has_acpi_name()) determines whether the ACPI information (label, acpi_index) or the SMBIOS information (label, index) is visible. [bhelgaas: commit log, split to separate patch, add "pci_dev_" prefix] Suggested-by: Oliver O'Halloran <oohall@gmail.com> 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>
Diffstat (limited to 'drivers/pci/pci-sysfs.c')
-rw-r--r--drivers/pci/pci-sysfs.c17
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 6dc01fe21fd2..befcd04ae0c8 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1380,18 +1380,10 @@ static const struct attribute_group pci_dev_reset_attr_group = {
int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev)
{
- int retval;
-
if (!sysfs_initialized)
return -EACCES;
- retval = pci_create_resource_files(pdev);
- if (retval)
- return retval;
-
- pci_create_firmware_label_files(pdev);
-
- return 0;
+ return pci_create_resource_files(pdev);
}
/**
@@ -1406,7 +1398,6 @@ void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
return;
pci_remove_resource_files(pdev);
- pci_remove_firmware_label_files(pdev);
}
static int __init pci_sysfs_init(void)
@@ -1501,6 +1492,12 @@ const struct attribute_group *pci_dev_groups[] = {
&pci_dev_rom_attr_group,
&pci_dev_reset_attr_group,
&pci_dev_vpd_attr_group,
+#ifdef CONFIG_DMI
+ &pci_dev_smbios_attr_group,
+#endif
+#ifdef CONFIG_ACPI
+ &pci_dev_acpi_attr_group,
+#endif
NULL,
};