From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Yinghai Lu To: Bjorn Helgaas , Len Brown , Taku Izumi , Jiang Liu , x86 Cc: Andrew Morton , Linus Torvalds , Greg Kroah-Hartman , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Yinghai Lu Subject: [PATCH 06/40] PCI: Split out stop_bus_device and remove_bus_dev again. Date: Wed, 19 Sep 2012 11:54:20 -0700 Message-Id: <1348080894-23412-7-git-send-email-yinghai@kernel.org> In-Reply-To: <1348080894-23412-1-git-send-email-yinghai@kernel.org> References: <1348080894-23412-1-git-send-email-yinghai@kernel.org> Sender: linux-acpi-owner@vger.kernel.org List-ID: So later could use them for pci root bus hotplug support. Also restore old behavoir: stop all at first then remove all. -v2: only split the functions. Signed-off-by: Yinghai Lu --- drivers/pci/remove.c | 51 ++++++++++++++++++++++++++++++++++--------------- 1 files changed, 35 insertions(+), 16 deletions(-) diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c index 4f9ca91..513972f 100644 --- a/drivers/pci/remove.c +++ b/drivers/pci/remove.c @@ -56,25 +56,13 @@ void pci_remove_bus(struct pci_bus *bus) } EXPORT_SYMBOL(pci_remove_bus); -/** - * pci_stop_and_remove_bus_device - remove a PCI device and any children - * @dev: the device to remove - * - * Remove a PCI device from the device lists, informing the drivers - * that the device has been removed. We also remove any subordinate - * buses and children in a depth-first manner. - * - * For each device we remove, delete the device structure from the - * device lists, remove the /proc entry, and notify userspace - * (/sbin/hotplug). - */ -void pci_stop_and_remove_bus_device(struct pci_dev *dev) +static void pci_stop_bus_device(struct pci_dev *dev) { struct pci_bus *bus = dev->subordinate; struct pci_dev *child, *tmp; /* - * Removing an SR-IOV PF device removes all the associated VFs, + * Stopping 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. @@ -82,13 +70,44 @@ void pci_stop_and_remove_bus_device(struct pci_dev *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(child); + } + + pci_stop_dev(dev); +} + +static void pci_remove_bus_device(struct pci_dev *dev) +{ + struct pci_bus *bus = dev->subordinate; + struct pci_dev *child, *tmp; + + if (bus) { + list_for_each_entry_safe(child, tmp, + &bus->devices, bus_list) + pci_remove_bus_device(child); pci_remove_bus(bus); dev->subordinate = NULL; } - pci_stop_dev(dev); pci_destroy_dev(dev); } + +/** + * pci_stop_and_remove_bus_device - remove a PCI device and any children + * @dev: the device to remove + * + * Remove a PCI device from the device lists, informing the drivers + * that the device has been removed. We also remove any subordinate + * buses and children in a depth-first manner. + * + * For each device we remove, delete the device structure from the + * device lists, remove the /proc entry, and notify userspace + * (/sbin/hotplug). + */ +void pci_stop_and_remove_bus_device(struct pci_dev *dev) +{ + pci_stop_bus_device(dev); + pci_remove_bus_device(dev); +} EXPORT_SYMBOL(pci_stop_and_remove_bus_device); -- 1.7.7