diff options
Diffstat (limited to 'drivers/pci/hotplug')
| -rw-r--r-- | drivers/pci/hotplug/Makefile | 6 | ||||
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 2 | ||||
| -rw-r--r-- | drivers/pci/hotplug/fakephp.c | 42 | ||||
| -rw-r--r-- | drivers/pci/hotplug/pciehp_core.c | 4 |
4 files changed, 36 insertions, 18 deletions
diff --git a/drivers/pci/hotplug/Makefile b/drivers/pci/hotplug/Makefile index e31fb91652c..2aa117c8cd8 100644 --- a/drivers/pci/hotplug/Makefile +++ b/drivers/pci/hotplug/Makefile @@ -5,11 +5,15 @@ obj-$(CONFIG_HOTPLUG_PCI) += pci_hotplug.o obj-$(CONFIG_HOTPLUG_PCI_COMPAQ) += cpqphp.o obj-$(CONFIG_HOTPLUG_PCI_IBM) += ibmphp.o + +# pciehp should be linked before acpiphp in order to allow the native driver +# to attempt to bind first. We can then fall back to generic support. + +obj-$(CONFIG_HOTPLUG_PCI_PCIE) += pciehp.o obj-$(CONFIG_HOTPLUG_PCI_ACPI) += acpiphp.o obj-$(CONFIG_HOTPLUG_PCI_ACPI_IBM) += acpiphp_ibm.o obj-$(CONFIG_HOTPLUG_PCI_CPCI_ZT5550) += cpcihp_zt5550.o obj-$(CONFIG_HOTPLUG_PCI_CPCI_GENERIC) += cpcihp_generic.o -obj-$(CONFIG_HOTPLUG_PCI_PCIE) += pciehp.o obj-$(CONFIG_HOTPLUG_PCI_SHPC) += shpchp.o obj-$(CONFIG_HOTPLUG_PCI_RPA) += rpaphp.o obj-$(CONFIG_HOTPLUG_PCI_RPA_DLPAR) += rpadlpar_io.o diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index f09b1010d47..803d9ddd6e7 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -266,6 +266,8 @@ static int detect_ejectable_slots(struct pci_bus *pbus) int found = acpi_pci_detect_ejectable(pbus); if (!found) { acpi_handle bridge_handle = acpi_pci_get_bridge_handle(pbus); + if (!bridge_handle) + return 0; acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge_handle, (u32)1, is_pci_dock_device, (void *)&found, NULL); } diff --git a/drivers/pci/hotplug/fakephp.c b/drivers/pci/hotplug/fakephp.c index b0e7de9e536..d8649e12729 100644 --- a/drivers/pci/hotplug/fakephp.c +++ b/drivers/pci/hotplug/fakephp.c @@ -195,13 +195,13 @@ static void remove_slot_worker(struct work_struct *work) * Tries hard not to re-enable already existing devices; * also handles scanning of subfunctions. */ -static void pci_rescan_slot(struct pci_dev *temp) +static int pci_rescan_slot(struct pci_dev *temp) { struct pci_bus *bus = temp->bus; struct pci_dev *dev; int func; - int retval; u8 hdr_type; + int count = 0; if (!pci_read_config_byte(temp, PCI_HEADER_TYPE, &hdr_type)) { temp->hdr_type = hdr_type & 0x7f; @@ -213,17 +213,12 @@ static void pci_rescan_slot(struct pci_dev *temp) dbg("New device on %s function %x:%x\n", bus->name, temp->devfn >> 3, temp->devfn & 7); - retval = pci_bus_add_device(dev); - if (retval) - dev_err(&dev->dev, "error adding " - "device, continuing.\n"); - else - add_slot(dev); + count++; } } /* multifunction device? */ if (!(hdr_type & 0x80)) - return; + return count; /* continue scanning for other functions */ for (func = 1, temp->devfn++; func < 8; func++, temp->devfn++) { @@ -239,16 +234,13 @@ static void pci_rescan_slot(struct pci_dev *temp) dbg("New device on %s function %x:%x\n", bus->name, temp->devfn >> 3, temp->devfn & 7); - retval = pci_bus_add_device(dev); - if (retval) - dev_err(&dev->dev, "error adding " - "device, continuing.\n"); - else - add_slot(dev); + count++; } } } } + + return count; } @@ -262,6 +254,8 @@ static void pci_rescan_bus(const struct pci_bus *bus) { unsigned int devfn; struct pci_dev *dev; + int retval; + int found = 0; dev = alloc_pci_dev(); if (!dev) return; @@ -270,7 +264,23 @@ static void pci_rescan_bus(const struct pci_bus *bus) dev->sysdata = bus->sysdata; for (devfn = 0; devfn < 0x100; devfn += 8) { dev->devfn = devfn; - pci_rescan_slot(dev); + found += pci_rescan_slot(dev); + } + + if (found) { + pci_bus_assign_resources(bus); + list_for_each_entry(dev, &bus->devices, bus_list) { + /* Skip already-added devices */ + if (dev->is_added) + continue; + retval = pci_bus_add_device(dev); + if (retval) + dev_err(&dev->dev, + "Error adding device, continuing\n"); + else + add_slot(dev); + } + pci_bus_add_devices(bus); } kfree(dev); } diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index 5482d4ed825..c2485542f54 100644 --- a/drivers/pci/hotplug/pciehp_core.c +++ b/drivers/pci/hotplug/pciehp_core.c @@ -126,8 +126,10 @@ static int set_lock_status(struct hotplug_slot *hotplug_slot, u8 status) mutex_lock(&slot->ctrl->crit_sect); /* has it been >1 sec since our last toggle? */ - if ((get_seconds() - slot->last_emi_toggle) < 1) + if ((get_seconds() - slot->last_emi_toggle) < 1) { + mutex_unlock(&slot->ctrl->crit_sect); return -EINVAL; + } /* see what our current state is */ retval = get_lock_status(hotplug_slot, &value); |