diff mbox series

[v6,3/7] PCI/VPD: Prevent VPD access for Amazon's Annapurna Labs Root Port

Message ID 20190912130042.14597-4-jonnyc@amazon.com (mailing list archive)
State Mainlined, archived
Commit a638b5de205af40bdadd867b1cb77320bbb2628e
Headers show
Series Amazon's Annapurna Labs DT-based PCIe host controller driver | expand

Commit Message

Chocron, Jonathan Sept. 12, 2019, 1 p.m. UTC 
The Amazon Annapurna Labs PCIe Root Port exposes the VPD capability,
but there is no actual support for it.

Trying to access the VPD (for example, as part of lspci -vv or when
reading the vpd sysfs file), results in the following warning print:

  pcieport 0001:00:00.0: VPD access failed.  This is likely a firmware bug on this device.  Contact the card vendor for a firmware update

Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
---
 drivers/pci/vpd.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
index 4963c2e2bd4c..7915d10f9aa1 100644
--- a/drivers/pci/vpd.c
+++ b/drivers/pci/vpd.c
@@ -571,6 +571,12 @@  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005f, quirk_blacklist_vpd);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, PCI_ANY_ID,
 		quirk_blacklist_vpd);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_QLOGIC, 0x2261, quirk_blacklist_vpd);
+/*
+ * The Amazon Annapurna Labs 0x0031 device id is reused for other non Root Port
+ * device types, so the quirk is registered for the PCI_CLASS_BRIDGE_PCI class.
+ */
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
+			      PCI_CLASS_BRIDGE_PCI, 8, quirk_blacklist_vpd);
 
 /*
  * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the