]> git.ipfire.org Git - thirdparty/kernel/linux.git/commit
PCI: Disable ACS SV for IDT 0x8090 switch
authorManivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Fri, 2 Jan 2026 15:34:50 +0000 (21:04 +0530)
committerBjorn Helgaas <bhelgaas@google.com>
Fri, 6 Feb 2026 22:54:12 +0000 (16:54 -0600)
commitb5f88a3947055e4ef8c04222ec75950d2fdfa79f
treeac842043dbbdde244d02e4baa6e9d277e659cf24
parentb26d7fb4a53e671a95b282b4f3922e79dfb1470d
PCI: Disable ACS SV for IDT 0x8090 switch

The IDT switch with Device ID 0x8090 used in the ARM Juno R2 development
board incorrectly raises an ACS Source Validation error on Completions for
Config Read Requests, even though PCIe r7.0, sec 6.12.1.1, says that
Completions are never affected by ACS Source Validation.

This is already handled by the pci_disable_broken_acs_cap() quirk for the
IDT 0x80b5 switch. Extend the quirk for the 0x8090 device too.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Link: https://patch.msgid.link/20260102-pci_acs-v3-4-72280b94d288@oss.qualcomm.com
drivers/pci/quirks.c