]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
PCI/DPC: Quirk PIO log size for Intel Ice Lake Root Ports
authorMika Westerberg <mika.westerberg@linux.intel.com>
Thu, 11 May 2023 12:19:05 +0000 (15:19 +0300)
committerBjorn Helgaas <bhelgaas@google.com>
Thu, 11 May 2023 22:38:46 +0000 (17:38 -0500)
commit3b8803494a0612acdeee714cb72aa142b1e05ce5
tree26fb5409383ad2ec3b5135179f1c5c3c74c43faa
parentac9a78681b921877518763ba0e89202254349d1b
PCI/DPC: Quirk PIO log size for Intel Ice Lake Root Ports

Commit 5459c0b70467 ("PCI/DPC: Quirk PIO log size for certain Intel Root
Ports") added quirks for Tiger and Alder Lake Root Ports but missed that
the same issue exists also in the previous generation, Ice Lake.

Apply the quirk for Ice Lake Root Ports as well.  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.

[bhelgaas: add dmesg warning and RP PIO Log dump info]
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=209943
Link: https://lore.kernel.org/r/20230511121905.73949-1-mika.westerberg@linux.intel.com
Reported-by: Mark Blakeney <mark.blakeney@bullet-systems.net>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
drivers/pci/quirks.c