linux-kernel - [PATCH 05/15] cxl/aer/pci: Update AER driver to read UCE fatal status for all CXL PCIe port devices

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Message-ID: <20241008221657.1130181-6-terry.bowman@amd.com>
Date: Tue, 8 Oct 2024 17:16:47 -0500
From: Terry Bowman <terry.bowman@....com>
To: <ming4.li@...el.com>, <linux-cxl@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>,
	<dave@...olabs.net>, <jonathan.cameron@...wei.com>, <dave.jiang@...el.com>,
	<alison.schofield@...el.com>, <vishal.l.verma@...el.com>,
	<dan.j.williams@...el.com>, <bhelgaas@...gle.com>, <mahesh@...ux.ibm.com>,
	<oohall@...il.com>, <Benjamin.Cheatham@....com>, <rrichter@....com>,
	<nathan.fontenot@....com>, <smita.koralahallichannabasappa@....com>,
	<terry.bowman@....com>
Subject: [PATCH 05/15] cxl/aer/pci: Update AER driver to read UCE fatal status for all CXL PCIe port devices

The AER service driver's aer_get_device_err_info() function does not
read uncorrectable (UCE) fatal error status from PCIe upstream port
devices. As a result, fatal errors are not logged or handled as needed
for CXL PCIe upstream switch port devices.

Update the aer_get_device_err_info() function to read the UCE fatal
status for all CXL PCIe port devices.

The fatal error status will be used in future patches implementing
CXL PCIe port error handling and logging.

Signed-off-by: Terry Bowman <terry.bowman@....com>
---
 drivers/pci/pcie/aer.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index 1c996287d4ce..9b2872c8e20d 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -1282,6 +1282,7 @@ int aer_get_device_error_info(struct pci_dev *dev, struct aer_err_info *info)
 	} else if (type == PCI_EXP_TYPE_ROOT_PORT ||
 		   type == PCI_EXP_TYPE_RC_EC ||
 		   type == PCI_EXP_TYPE_DOWNSTREAM ||
+		   type == PCI_EXP_TYPE_UPSTREAM ||
 		   info->severity == AER_NONFATAL) {
 
 		/* Link is still healthy for IO reads */
-- 
2.34.1