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author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2021-09-13 20:23:59 +0300 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2021-09-16 00:26:59 +0300 |
commit | 6bd65974dedd1e8638e6665e92ccbf26e8a67cbf (patch) | |
tree | 9e1520a9ff5e5802b77cd4da0e9ef0b9ddcafac1 /.gitattributes | |
parent | 00e1a5d21b4ff514593554167b28a8caeda1497f (diff) | |
download | linux-6bd65974dedd1e8638e6665e92ccbf26e8a67cbf.tar.xz |
PCI/ACPI: Don't reset a fwnode set by OF
Commit 375553a93201 ("PCI: Setup ACPI fwnode early and at the same time
with OF") added a call to pci_set_acpi_fwnode() in pci_setup_device(),
which unconditionally clears any fwnode previously set by
pci_set_of_node().
pci_set_acpi_fwnode() looks for ACPI_COMPANION(), which only returns the
existing fwnode if it was set by ACPI_COMPANION_SET(). If it was set by
OF instead, ACPI_COMPANION() returns NULL and pci_set_acpi_fwnode()
accidentally clears the fwnode. To fix this, look for any fwnode instead
of just ACPI companions.
Fixes a virtio-iommu boot regression in v5.15-rc1.
Fixes: 375553a93201 ("PCI: Setup ACPI fwnode early and at the same time with OF")
Link: https://lore.kernel.org/r/20210913172358.1775381-1-jean-philippe@linaro.org
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to '.gitattributes')
0 files changed, 0 insertions, 0 deletions