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tiwaikwilczynski
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PCI/DPC: Quirk PIO log size for Intel Raptor Lake-P
Apparently the Raptor Lake-P reference firmware configures the PIO log size correctly, but some vendor BIOSes, including at least ASUSTeK COMPUTER INC. Zenbook UX3402VA_UX3402VA, do not. Apply the quirk for Raptor Lake-P. This prevents kernel complaints like: DPC: RP PIO log size 0 is invalid and also enables the DPC driver to dump the RP PIO Log registers when DPC is triggered. Note that the bug report also mentions 8086:a76e, which has been already added by 627c6db ("PCI/DPC: Quirk PIO log size for Intel Raptor Lake Root Ports"). Link: https://lore.kernel.org/r/[email protected] Link: https://bugzilla.suse.com/show_bug.cgi?id=1234623 Signed-off-by: Takashi Iwai <[email protected]> [bhelgaas: commit log] Signed-off-by: Bjorn Helgaas <[email protected]> Signed-off-by: Krzysztof Wilczyński <[email protected]>
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drivers/pci/quirks.c

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@@ -6253,6 +6253,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2b, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0xa72f, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0xa73f, dpc_log_size);
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0xa76e, dpc_log_size);
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#endif

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