Merge branch 'pci/bjorn-cleanup-remove' into next

* pci/bjorn-cleanup-remove:
  PCI: Remove unused pci_dev_b()
  sgi-agp: Use list_for_each_entry() for bus->devices traversal
  parisc/PCI: Use list_for_each_entry() for bus->devices traversal
  parisc/PCI: Enable PERR/SERR on all devices
  frv/PCI: Use list_for_each_entry() for bus->devices traversal
  PCI: Leave normal LIST_POISON in deleted list entries
  PCI: Rename local variables to conventional names
  PCI: Remove unused, commented-out, code
  PCI: Stop and remove devices in one pass
  PCI: Fold stop and remove helpers into their callers
  PCI: Use list_for_each_entry() for bus->devices traversal
  PCI: Remove pci_stop_and_remove_behind_bridge()
  PCI: Don't export stop_bus_device and remove_bus_device interfaces
  pcmcia: Use common pci_stop_and_remove_bus_device()
  PCI: acpiphp: Use common pci_stop_and_remove_bus_device()
  PCI: acpiphp: Stop disabling bridges on remove

5 files changed, 24 insertions, 237 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index ad6fd6695495..7be4ca5e1f4c 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -869,17 +869,6 @@ static int __ref enable_device(struct acpiphp_slot *slot)
         return retval;
 }
 
-static void disable_bridges(struct pci_bus *bus)
-{
-        struct pci_dev *dev;
-        list_for_each_entry(dev, &bus->devices, bus_list) {
-                if (dev->subordinate) {
-                        disable_bridges(dev->subordinate);
-                        pci_disable_device(dev);
-                }
-        }
-}
-
 /* return first device in slot, acquiring a reference on it */
 static struct pci_dev *dev_in_slot(struct acpiphp_slot *slot)
 {
@@ -931,12 +920,7 @@ static int disable_device(struct acpiphp_slot *slot)
          * here.
          */
         while ((pdev = dev_in_slot(slot))) {
-                pci_stop_bus_device(pdev);
-                if (pdev->subordinate) {
-                        disable_bridges(pdev->subordinate);
-                        pci_disable_device(pdev);
-                }
-                __pci_remove_bus_device(pdev);
+                pci_stop_and_remove_bus_device(pdev);
                 pci_dev_put(pdev);
         }
 
@@ -1477,34 +1461,6 @@ int __init acpiphp_get_num_slots(void)
 }
 
 
-#if 0
-/**
- * acpiphp_for_each_slot - call function for each slot
- * @fn: callback function
- * @data: context to be passed to callback function
- */
-static int acpiphp_for_each_slot(acpiphp_callback fn, void *data)
-{
-        struct list_head *node;
-        struct acpiphp_bridge *bridge;
-        struct acpiphp_slot *slot;
-        int retval = 0;
-
-        list_for_each (node, &bridge_list) {
-                bridge = (struct acpiphp_bridge *)node;
-                for (slot = bridge->slots; slot; slot = slot->next) {
-                        retval = fn(slot, data);
-                        if (!retval)
-                                goto err_exit;
-                }
-        }
-
- err_exit:
-        return retval;
-}
-#endif
-
-
 /**
  * acpiphp_enable_slot - power on slot
  * @slot: ACPI PHP slot
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 27911b55c2a5..eb907a8faf2a 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -434,25 +434,6 @@ int pci_proc_detach_device(struct pci_dev *dev)
         return 0;
 }
 
-#if 0
-int pci_proc_attach_bus(struct pci_bus* bus)
-{
-        struct proc_dir_entry *de = bus->procdir;
-
-        if (!proc_initialized)
-                return -EACCES;
-
-        if (!de) {
-                char name[16];
-                sprintf(name, "%02x", bus->number);
-                de = bus->procdir = proc_mkdir(name, proc_bus_pci_dir);
-                if (!de)
-                        return -ENOMEM;
-        }
-        return 0;
-}
-#endif  /*  0  */
-
 int pci_proc_detach_bus(struct pci_bus* bus)
 {
         struct proc_dir_entry *de = bus->procdir;
diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index 04a4861b4749..4f9ca9162895 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -32,53 +32,30 @@ static void pci_stop_dev(struct pci_dev *dev)
 
 static void pci_destroy_dev(struct pci_dev *dev)
 {
-        /* Remove the device from the device lists, and prevent any further
-         * list accesses from this device */
         down_write(&pci_bus_sem);
         list_del(&dev->bus_list);
-        dev->bus_list.next = dev->bus_list.prev = NULL;
         up_write(&pci_bus_sem);
 
         pci_free_resources(dev);
         pci_dev_put(dev);
 }
 
-/**
- * pci_remove_device_safe - remove an unused hotplug device
- * @dev: the device to remove
- *
- * Delete the device structure from the device lists and 
- * notify userspace (/sbin/hotplug), but only if the device
- * in question is not being used by a driver.
- * Returns 0 on success.
- */
-#if 0
-int pci_remove_device_safe(struct pci_dev *dev)
+void pci_remove_bus(struct pci_bus *bus)
 {
-        if (pci_dev_driver(dev))
-                return -EBUSY;
-        pci_destroy_dev(dev);
-        return 0;
-}
-#endif  /*  0  */
-
-void pci_remove_bus(struct pci_bus *pci_bus)
-{
-        pci_proc_detach_bus(pci_bus);
+        pci_proc_detach_bus(bus);
 
         down_write(&pci_bus_sem);
-        list_del(&pci_bus->node);
-        pci_bus_release_busn_res(pci_bus);
+        list_del(&bus->node);
+        pci_bus_release_busn_res(bus);
         up_write(&pci_bus_sem);
-        if (!pci_bus->is_added)
+        if (!bus->is_added)
                 return;
 
-        pci_remove_legacy_files(pci_bus);
-        device_unregister(&pci_bus->dev);
+        pci_remove_legacy_files(bus);
+        device_unregister(&bus->dev);
 }
 EXPORT_SYMBOL(pci_remove_bus);
 
-static void __pci_remove_behind_bridge(struct pci_dev *dev);
 /**
  * pci_stop_and_remove_bus_device - remove a PCI device and any children
  * @dev: the device to remove
@@ -91,93 +68,27 @@ static void __pci_remove_behind_bridge(struct pci_dev *dev);
  * device lists, remove the /proc entry, and notify userspace
  * (/sbin/hotplug).
  */
-void __pci_remove_bus_device(struct pci_dev *dev)
-{
-        if (dev->subordinate) {
-                struct pci_bus *b = dev->subordinate;
-
-                __pci_remove_behind_bridge(dev);
-                pci_remove_bus(b);
-                dev->subordinate = NULL;
-        }
-
-        pci_destroy_dev(dev);
-}
-EXPORT_SYMBOL(__pci_remove_bus_device);
-
 void pci_stop_and_remove_bus_device(struct pci_dev *dev)
 {
-        pci_stop_bus_device(dev);
-        __pci_remove_bus_device(dev);
-}
-
-static void __pci_remove_behind_bridge(struct pci_dev *dev)
-{
-        struct list_head *l, *n;
-
-        if (dev->subordinate)
-                list_for_each_safe(l, n, &dev->subordinate->devices)
-                        __pci_remove_bus_device(pci_dev_b(l));
-}
-
-static void pci_stop_behind_bridge(struct pci_dev *dev)
-{
-        struct list_head *l, *n;
-
-        if (dev->subordinate)
-                list_for_each_safe(l, n, &dev->subordinate->devices)
-                        pci_stop_bus_device(pci_dev_b(l));
-}
-
-/**
- * pci_stop_and_remove_behind_bridge - stop and remove all devices behind
- *                                       a PCI bridge
- * @dev: PCI bridge device
- *
- * Remove all devices on the bus, except for the parent bridge.
- * This also removes any child buses, and any devices they may
- * contain in a depth-first manner.
- */
-void pci_stop_and_remove_behind_bridge(struct pci_dev *dev)
-{
-        pci_stop_behind_bridge(dev);
-        __pci_remove_behind_bridge(dev);
-}
-
-static void pci_stop_bus_devices(struct pci_bus *bus)
-{
-        struct list_head *l, *n;
+        struct pci_bus *bus = dev->subordinate;
+        struct pci_dev *child, *tmp;
 
         /*
-         * VFs could be removed by pci_stop_and_remove_bus_device() in the
-         *  pci_stop_bus_devices() code path for PF.
-         *  aka, bus->devices get updated in the process.
-         * but VFs are inserted after PFs when SRIOV is enabled for PF,
-         * We can iterate the list backwards to get prev valid PF instead
-         *  of removed VF.
+         * Removing an SR-IOV PF device removes all the associated VFs,
+         * which will update the bus->devices list and confuse the
+         * iterator.  Therefore, iterate in reverse so we remove the VFs
+         * first, then the PF.
          */
-        list_for_each_prev_safe(l, n, &bus->devices) {
-                struct pci_dev *dev = pci_dev_b(l);
-                pci_stop_bus_device(dev);
-        }
-}
+        if (bus) {
+                list_for_each_entry_safe_reverse(child, tmp,
+                                                 &bus->devices, bus_list)
+                        pci_stop_and_remove_bus_device(child);
 
-/**
- * pci_stop_bus_device - stop a PCI device and any children
- * @dev: the device to stop
- *
- * Stop a PCI device (detach the driver, remove from the global list
- * and so on). This also stop any subordinate buses and children in a
- * depth-first manner.
- */
-void pci_stop_bus_device(struct pci_dev *dev)
-{
-        if (dev->subordinate)
-                pci_stop_bus_devices(dev->subordinate);
+                pci_remove_bus(bus);
+                dev->subordinate = NULL;
+        }
 
         pci_stop_dev(dev);
+        pci_destroy_dev(dev);
 }
-
 EXPORT_SYMBOL(pci_stop_and_remove_bus_device);
-EXPORT_SYMBOL(pci_stop_and_remove_behind_bridge);
-EXPORT_SYMBOL_GPL(pci_stop_bus_device);
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index 48ebdb237f3f..0b3037ab8b93 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -167,44 +167,6 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size)
         return rom;
 }
 
-#if 0
-/**
- * pci_map_rom_copy - map a PCI ROM to kernel space, create a copy
- * @pdev: pointer to pci device struct
- * @size: pointer to receive size of pci window over ROM
- *
- * Return: kernel virtual pointer to image of ROM
- *
- * Map a PCI ROM into kernel space. If ROM is boot video ROM,
- * the shadow BIOS copy will be returned instead of the
- * actual ROM.
- */
-void __iomem *pci_map_rom_copy(struct pci_dev *pdev, size_t *size)
-{
-        struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
-        void __iomem *rom;
-
-        rom = pci_map_rom(pdev, size);
-        if (!rom)
-                return NULL;
-
-        if (res->flags & (IORESOURCE_ROM_COPY | IORESOURCE_ROM_SHADOW |
-                          IORESOURCE_ROM_BIOS_COPY))
-                return rom;
-
-        res->start = (unsigned long)kmalloc(*size, GFP_KERNEL);
-        if (!res->start)
-                return rom;
-
-        res->end = res->start + *size;
-        memcpy_fromio((void*)(unsigned long)res->start, rom, *size);
-        pci_unmap_rom(pdev, rom);
-        res->flags |= IORESOURCE_ROM_COPY;
-
-        return (void __iomem *)(unsigned long)res->start;
-}
-#endif  /*  0  */
-
 /**
  * pci_unmap_rom - unmap the ROM from kernel space
  * @pdev: pointer to pci device struct
@@ -226,27 +188,6 @@ void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom)
                 pci_disable_rom(pdev);
 }
 
-#if 0
-/**
- * pci_remove_rom - disable the ROM and remove its sysfs attribute
- * @pdev: pointer to pci device struct
- *
- * Remove the rom file in sysfs and disable ROM decoding.
- */
-void pci_remove_rom(struct pci_dev *pdev)
-{
-        struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
-
-        if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
-                sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr);
-        if (!(res->flags & (IORESOURCE_ROM_ENABLE |
-                            IORESOURCE_ROM_SHADOW |
-                            IORESOURCE_ROM_BIOS_COPY |
-                            IORESOURCE_ROM_COPY)))
-                pci_disable_rom(pdev);
-}
-#endif  /*  0  */
-
 /**
  * pci_cleanup_rom - free the ROM copy created by pci_map_rom_copy
  * @pdev: pointer to pci device struct
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 621b162ceb69..d84cdcfaacf3 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -130,16 +130,14 @@ pci_find_next_bus(const struct pci_bus *from)
  * decrement the reference count by calling pci_dev_put().
  * If no device is found, %NULL is returned.
  */
-struct pci_dev * pci_get_slot(struct pci_bus *bus, unsigned int devfn)
+struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn)
 {
-        struct list_head *tmp;
         struct pci_dev *dev;
 
         WARN_ON(in_interrupt());
         down_read(&pci_bus_sem);
 
-        list_for_each(tmp, &bus->devices) {
-                dev = pci_dev_b(tmp);
+        list_for_each_entry(dev, &bus->devices, bus_list) {
                 if (dev->devfn == devfn)
                         goto out;
         }