linux-kernel - [PATCH v8 02/13] PCI/acpiphp: use list_for_each_entry_safe() in acpiphp_sanitize

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Date:	Tue, 26 Feb 2013 23:25:42 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>,
	"Rafael J . Wysocki" <rjw@...k.pl>
Cc:	Yijing Wang <wangyijing@...wei.com>,
	Yinghai Lu <yinghai@...nel.org>, Jiang Liu <liuj97@...il.com>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Toshi Kani <toshi.kani@...com>,
	Myron Stowe <myron.stowe@...hat.com>,
	Jiang Liu <jiang.liu@...wei.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: [PATCH v8 02/13] PCI/acpiphp: use list_for_each_entry_safe() in acpiphp_sanitize_bus()

From: Yijing Wang <wangyijing@...wei.com>

Function acpiphp_sanitize_bus() may call pci_stop_and_remove_bus_device(),
which in turn may remove device from bus->devices list. So walk the
bus->devices list with list_for_each_entry_safe().

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
Signed-off-by: Jiang Liu <jiang.liu@...wei.com>
Cc: Yinghai Lu <yinghai@...nel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc: Toshi Kani <toshi.kani@...com>
Cc: linux-pci@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/pci/hotplug/acpiphp_glue.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 4681d2c..514851d8 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -1086,11 +1086,11 @@ static void acpiphp_set_hpp_values(struct pci_bus *bus)
  */
 static void acpiphp_sanitize_bus(struct pci_bus *bus)
 {
-	struct pci_dev *dev;
+	struct pci_dev *dev, *tmp;
 	int i;
 	unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM;
 
-	list_for_each_entry(dev, &bus->devices, bus_list) {
+	list_for_each_entry_safe(dev, tmp, &bus->devices, bus_list) {
 		for (i=0; i<PCI_BRIDGE_RESOURCES; i++) {
 			struct resource *res = &dev->resource[i];
 			if ((res->flags & type_mask) && !res->start &&
-- 
1.7.9.5

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