Thread (45 messages) 45 messages, 3 authors, 2015-06-16
STALE4006d REVIEWED: 1 (0M)
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[PATCH V6 03/10] powerpc/pci: Remove VFs prior to PF

From: Wei Yang <hidden>
Date: 2015-05-19 01:38:20
Also in: linux-pci
Subsystem: linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Michael Ellerman, Linus Torvalds

As commit ac205b7b ("PCI: make sriov work with hotplug remove") indicates,
VFs, which might be hooked to same PCI bus as their PF should be removed
before the PF. Otherwise, the PCI hot unplugging on the PCI bus would
cause kernel crash.

The patch applies the above pattern to PowerPC PCI hotplug path.

[gwshan: changelog]
Signed-off-by: Wei Yang <redacted>
Acked-by: Gavin Shan <redacted>
---
 arch/powerpc/kernel/pci-hotplug.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c
index 7ed85a6..98f84ed 100644
--- a/arch/powerpc/kernel/pci-hotplug.c
+++ b/arch/powerpc/kernel/pci-hotplug.c
@@ -50,7 +50,7 @@ void pcibios_remove_pci_devices(struct pci_bus *bus)
 
 	pr_debug("PCI: Removing devices on bus %04x:%02x\n",
 		 pci_domain_nr(bus),  bus->number);
-	list_for_each_entry_safe(dev, tmp, &bus->devices, bus_list) {
+	list_for_each_entry_safe_reverse(dev, tmp, &bus->devices, bus_list) {
 		pr_debug("   Removing %s...\n", pci_name(dev));
 		pci_stop_and_remove_bus_device(dev);
 	}
-- 
1.7.9.5
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