Commit b0c568de authored by Yinghai Lu's avatar Yinghai Lu Committed by Bjorn Helgaas

frv/PCI: Clip bridge windows to fit in upstream windows

Every PCI-PCI bridge window should fit inside an upstream bridge window
because orphaned address space is unreachable from the primary side of the
upstream bridge.  If we inherit invalid bridge windows that overlap an
upstream window from firmware, clip them to fit and update the bridge
accordingly.

[bhelgaas: changelog]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=85491Reported-by: default avatarMarek Kordik <kordikmarek@gmail.com>
Fixes: 5b285415 ("PCI: Restrict 64-bit prefetchable bridge windows to 64-bit resources")
Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
CC: David Howells <dhowells@redhat.com>
CC: Paul Gortmaker <paul.gortmaker@windriver.com>
parent b3e11822
...@@ -94,7 +94,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list) ...@@ -94,7 +94,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
r = &dev->resource[idx]; r = &dev->resource[idx];
if (!r->start) if (!r->start)
continue; continue;
pci_claim_resource(dev, idx); pci_claim_bridge_resource(dev, idx);
} }
} }
pcibios_allocate_bus_resources(&bus->children); pcibios_allocate_bus_resources(&bus->children);
......
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