diff options
Diffstat (limited to 'drivers/pci/hotplug/pciehp_pci.c')
| -rw-r--r-- | drivers/pci/hotplug/pciehp_pci.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/pci/hotplug/pciehp_pci.c b/drivers/pci/hotplug/pciehp_pci.c index 3ef5c0744249..0322bd4f0a7a 100644 --- a/drivers/pci/hotplug/pciehp_pci.c +++ b/drivers/pci/hotplug/pciehp_pci.c @@ -20,6 +20,14 @@ #include "../pci.h" #include "pciehp.h" +/** + * pciehp_configure_device() - enumerate PCI devices below a hotplug bridge + * @p_slot: PCIe hotplug slot + * + * Enumerate PCI devices below a hotplug bridge and add them to the system. + * Return 0 on success, %-EEXIST if the devices are already enumerated or + * %-ENODEV if enumeration failed. + */ int pciehp_configure_device(struct slot *p_slot) { struct pci_dev *dev; @@ -62,9 +70,19 @@ int pciehp_configure_device(struct slot *p_slot) return ret; } -void pciehp_unconfigure_device(struct slot *p_slot) +/** + * pciehp_unconfigure_device() - remove PCI devices below a hotplug bridge + * @p_slot: PCIe hotplug slot + * @presence: whether the card is still present in the slot; + * true for safe removal via sysfs or an Attention Button press, + * false for surprise removal + * + * Unbind PCI devices below a hotplug bridge from their drivers and remove + * them from the system. Safely removed devices are quiesced. Surprise + * removed devices are marked as such to prevent further accesses. + */ +void pciehp_unconfigure_device(struct slot *p_slot, bool presence) { - u8 presence = 0; struct pci_dev *dev, *temp; struct pci_bus *parent = p_slot->ctrl->pcie->port->subordinate; u16 command; @@ -72,7 +90,6 @@ void pciehp_unconfigure_device(struct slot *p_slot) ctrl_dbg(ctrl, "%s: domain:bus:dev = %04x:%02x:00\n", __func__, pci_domain_nr(parent), parent->number); - pciehp_get_adapter_status(p_slot, &presence); if (!presence) pci_walk_bus(parent, pci_dev_set_disconnected, NULL); |