PCI: Disable MSI for Tegra234 Root Ports

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Tegra234 PCIe Root Ports don't generate MSI interrupts for PME and AER
events. Since PCIe spec (r6.0 sec 6.1.4.3) doesn't support using a mix of
INTx and MSI/MSI-X, MSI needs to be disabled to avoid Root Port service
drivers registering their respective ISRs with MSI interrupt and to let
only INTx be used for all events.

Link: https://lore.kernel.org/r/20220721142052.25971-8-vidyas@nvidia.com
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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Vidya Sagar 2022-07-21 19:50:43 +05:30 • committed by Bjorn Helgaas

parent b949e4661d

commit bf32b8f952

1 changed files with 13 additions and 4 deletions

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17

drivers/pci/quirks.c

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