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authorIvan Kokshaysky <ink@jurassic.park.msu.ru>2009-01-15 13:51:18 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-15 16:39:40 -0800
commit2f88d151cb8e73587983d7feccd70672ff6730fe (patch)
treebb5e134c5d3a3b056e262636015e9d1a44d2a246 /arch/alpha
parent70b66cbfd3316b792a855cb9a2574e85f1a63d0f (diff)
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 <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/kernel/sys_nautilus.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index a7f23b5ab814..99c0f46f6b9c 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);
}