From 2f88d151cb8e73587983d7feccd70672ff6730fe Mon Sep 17 00:00:00 2001 From: Ivan Kokshaysky Date: Thu, 15 Jan 2009 13:51:18 -0800 Subject: [PATCH] alpha: nautilus - fix hang on boot Recently introduced generic pci_common_swizzle() relies on bus->self being NULL for the root PCI bus. But on nautilus bus->self points to the host bridge device, which is necessary as we do a root bus sizing on this system. As a result, pci_common_swizzle() loops infinitely. This worked until 2.6.29-rc1 because the alpha-specific swizzle routine checked for bus->parent == NULL (instead of bus->self). Fixed by clearing bus->self after bus sizing is done. Signed-off-by: Ivan Kokshaysky Cc: Richard Henderson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/kernel/sys_nautilus.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c index a7f23b5ab81..99c0f46f6b9 100644 --- a/arch/alpha/kernel/sys_nautilus.c +++ b/arch/alpha/kernel/sys_nautilus.c @@ -245,6 +245,10 @@ nautilus_init_pci(void) IRONGATE0->pci_mem = pci_mem; pci_bus_assign_resources(bus); + + /* pci_common_swizzle() relies on bus->self being NULL + for the root bus, so just clear it. */ + bus->self = NULL; pci_fixup_irqs(alpha_mv.pci_swizzle, alpha_mv.pci_map_irq); } -- 2.41.0