Patch "PCI/DPC: Quirk PIO log size for Intel Raptor Lake Root Ports" has been added to the 6.7-stable tree

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This is a note to let you know that I've just added the patch titled

    PCI/DPC: Quirk PIO log size for Intel Raptor Lake Root Ports

to the 6.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pci-dpc-quirk-pio-log-size-for-intel-raptor-lake-roo.patch
and it can be found in the queue-6.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 5040319bbfe4c9a8acbbbbdcdedfd3ac3368f79f
Author: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
Date:   Tue Mar 5 12:30:56 2024 +0100

    PCI/DPC: Quirk PIO log size for Intel Raptor Lake Root Ports
    
    [ Upstream commit 627c6db20703b5d18d928464f411d0d4ec327508 ]
    
    Commit 5459c0b70467 ("PCI/DPC: Quirk PIO log size for certain Intel Root
    Ports") and commit 3b8803494a06 ("PCI/DPC: Quirk PIO log size for Intel Ice
    Lake Root Ports") add quirks for Ice, Tiger and Alder Lake Root Ports.
    System firmware for Raptor Lake still has the bug, so Linux logs the
    warning below on several Raptor Lake systems like Dell Precision 3581 with
    Intel Raptor Lake processor (0W18NX) system firmware/BIOS version 1.10.1.
    
      pci 0000:00:07.0: [8086:a76e] type 01 class 0x060400
      pci 0000:00:07.0: DPC: RP PIO log size 0 is invalid
      pci 0000:00:07.1: [8086:a73f] type 01 class 0x060400
      pci 0000:00:07.1: DPC: RP PIO log size 0 is invalid
    
    Apply the quirk for Raptor Lake Root Ports as well.
    
    This also enables the DPC driver to dump the RP PIO Log registers when DPC
    is triggered.
    
    Link: https://lore.kernel.org/r/20240305113057.56468-1-pmenzel@xxxxxxxxxxxxx
    Reported-by: Niels van Aert <nvaert1986@xxxxxxxxxxx>
    Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218560
    Signed-off-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
    Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
    Cc: <stable@xxxxxxxxxxxxxxx>
    Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
    Cc: Niels van Aert <nvaert1986@xxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 528044237bf9f..fa770601c655a 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -6219,6 +6219,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2b, dpc_log_size);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0xa73f, dpc_log_size);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0xa76e, dpc_log_size);
 #endif
 
 /*




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