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authorKai-Heng Feng <kaihengf@nvidia.com>2026-02-10 22:20:57 +0800
committerBjorn Helgaas <bhelgaas@google.com>2026-02-12 11:08:34 -0600
commite5f72cb9cea599dc9f5a9b80a33560a1d06f01cc (patch)
treeace2a150af912a6702bd82d0cc80c1633f961fce /include/linux
parent1c2b4a4c2bcb950f182eeeb33d94b565607608cf (diff)
PCI: Validate window resource type in pbus_select_window_for_type()
After ebe091ad81e1 ("PCI: Use pbus_select_window_for_type() during IO window sizing") and ae88d0b9c57f ("PCI: Use pbus_select_window_for_type() during mem window sizing"), many bridge windows can't get resources assigned: pci 0006:05:00.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: can't assign; no space pci 0006:05:00.0: bridge window [??? 0x00001000-0x00001fff flags 0x20080000]: failed to assign Those commits replace find_bus_resource_of_type() with pbus_select_window_for_type(), and the latter lacks resource type validation. Add the resource type validation back to pbus_select_window_for_type() to match the original behavior. Fixes: 74afce3dfcba ("PCI: Add bridge window selection functions") Link: https://bugzilla.kernel.org/show_bug.cgi?id=221072 Signed-off-by: Kai-Heng Feng <kaihengf@nvidia.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://patch.msgid.link/20260210142058.82701-1-kaihengf@nvidia.com
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