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path: root/drivers/pci/probe.c
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Diffstat (limited to 'drivers/pci/probe.c')
-rw-r--r--drivers/pci/probe.c47
1 files changed, 3 insertions, 44 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 2f0ae70710d6..b1724cf31b66 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -860,49 +860,6 @@ int pci_cfg_space_size_ext(struct pci_dev *dev)
860 return PCI_CFG_SPACE_SIZE; 860 return PCI_CFG_SPACE_SIZE;
861} 861}
862 862
863/**
864 * pci_disable_pme - Disable the PME function of PCI device
865 * @dev: PCI device affected
866 * -EINVAL is returned if PCI device doesn't support PME.
867 * Zero is returned if the PME is supported and can be disabled.
868 */
869static int pci_disable_pme(struct pci_dev *dev)
870{
871 int pm;
872 u16 value;
873
874 /* find PCI PM capability in list */
875 pm = pci_find_capability(dev, PCI_CAP_ID_PM);
876
877 /* If device doesn't support PM Capabilities, it means that PME is
878 * not supported.
879 */
880 if (!pm)
881 return -EINVAL;
882 /* Check device's ability to generate PME# */
883 pci_read_config_word(dev, pm + PCI_PM_PMC, &value);
884
885 value &= PCI_PM_CAP_PME_MASK;
886 /* Check if it can generate PME# */
887 if (!value) {
888 /*
889 * If it is zero, it means that PME is still unsupported
890 * although there exists the PM capability.
891 */
892 return -EINVAL;
893 }
894
895 pci_read_config_word(dev, pm + PCI_PM_CTRL, &value);
896
897 /* Clear PME_Status by writing 1 to it */
898 value |= PCI_PM_CTRL_PME_STATUS ;
899 /* Disable PME enable bit */
900 value &= ~PCI_PM_CTRL_PME_ENABLE;
901 pci_write_config_word(dev, pm + PCI_PM_CTRL, value);
902
903 return 0;
904}
905
906int pci_cfg_space_size(struct pci_dev *dev) 863int pci_cfg_space_size(struct pci_dev *dev)
907{ 864{
908 int pos; 865 int pos;
@@ -1010,7 +967,6 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
1010 } 967 }
1011 968
1012 pci_vpd_pci22_init(dev); 969 pci_vpd_pci22_init(dev);
1013 pci_disable_pme(dev);
1014 970
1015 return dev; 971 return dev;
1016} 972}
@@ -1031,6 +987,9 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
1031 /* Fix up broken headers */ 987 /* Fix up broken headers */
1032 pci_fixup_device(pci_fixup_header, dev); 988 pci_fixup_device(pci_fixup_header, dev);
1033 989
990 /* Initialize power management of the device */
991 pci_pm_init(dev);
992
1034 /* 993 /*
1035 * Add the device to our list of discovered devices 994 * Add the device to our list of discovered devices
1036 * and the bus list for fixup functions, etc. 995 * and the bus list for fixup functions, etc.