From: Kamenee Arumugam <kamenee.arumugam@xxxxxxxxx>
For Hfi1, this unsupported request error is not considered a fatal
error. Set Unsupported Request Error bit in Uncorrectable Error Mask
register to disable error reporting to the PCIe root complex.
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@xxxxxxxxx>
Signed-off-by: Kamenee Arumugam <kamenee.arumugam@xxxxxxxxx>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
---
drivers/infiniband/hw/hfi1/pcie.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/pcie.c b/drivers/infiniband/hw/hfi1/pcie.c
index 87bd6b6..332c843 100644
--- a/drivers/infiniband/hw/hfi1/pcie.c
+++ b/drivers/infiniband/hw/hfi1/pcie.c
@@ -79,6 +79,8 @@
int hfi1_pcie_init(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int ret;
+ int aer;
+ u32 data;
ret = pci_enable_device(pdev);
if (ret) {
@@ -130,6 +132,19 @@ int hfi1_pcie_init(struct pci_dev *pdev, const struct pci_device_id *ent)
}
pci_set_master(pdev);
+
+ aer = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
+ if (!aer)
+ goto done;
+ pci_read_config_dword(pdev, aer + PCI_ERR_UNCOR_MASK, &data);
+ if (!(data & PCI_ERR_UNC_UNSUP)) {
+ data |= PCI_ERR_UNC_UNSUP;
+ if (!pci_write_config_dword(pdev, aer + PCI_ERR_UNCOR_MASK,
+ data))
+ hfi1_early_err(&pdev->dev,
+ "Masking Unsupported Request error\n");
+ }
+
(void)pci_enable_pcie_error_reporting(pdev);
goto done;
--
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