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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jun 2023 22:20:46.7809 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 61083b95-5bfb-40e2-0e9b-08db67a5712a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EE36.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6209 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The CXL driver plans to use cper_print_aer() for logging restricted CXL host (RCH) AER errors. cper_print_aer() is not currently exported and therefore not usable by the CXL drivers built as loadable modules. Export the cper_print_aer() function. Use the EXPORT_SYMBOL_NS_GPL() variant to restrict the export to CXL drivers. The CONFIG_ACPI_APEI_PCIEAER kernel config is currently used to enable cper_print_aer(). cper_print_aer() logs the AER registers and is useful in PCIE AER logging outside of APEI. Remove the CONFIG_ACPI_APEI_PCIEAER dependency to enable cper_print_aer(). The cper_print_aer() function name implies CPER specific use but is useful in non-CPER cases as well. Rename cper_print_aer() to pci_print_aer(). Co-developed-by: Robert Richter Signed-off-by: Robert Richter Signed-off-by: Terry Bowman Cc: Mahesh J Salgaonkar Cc: "Oliver O'Halloran" Cc: Bjorn Helgaas Cc: linux-pci@vger.kernel.org Reviewed-by: Jonathan Cameron Acked-by: Bjorn Helgaas --- drivers/pci/pcie/aer.c | 9 +++++---- include/linux/aer.h | 2 +- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index f6c24ded134c..d3344fcf1f79 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -771,9 +771,10 @@ int cper_severity_to_aer(int cper_severity) } } EXPORT_SYMBOL_GPL(cper_severity_to_aer); +#endif -void cper_print_aer(struct pci_dev *dev, int aer_severity, - struct aer_capability_regs *aer) +void pci_print_aer(struct pci_dev *dev, int aer_severity, + struct aer_capability_regs *aer) { int layer, agent, tlp_header_valid = 0; u32 status, mask; @@ -812,7 +813,7 @@ void cper_print_aer(struct pci_dev *dev, int aer_severity, trace_aer_event(dev_name(&dev->dev), (status & ~mask), aer_severity, tlp_header_valid, &aer->header_log); } -#endif +EXPORT_SYMBOL_NS_GPL(pci_print_aer, CXL); /** * add_error_device - list device to be handled @@ -1009,7 +1010,7 @@ static void aer_recover_work_func(struct work_struct *work) PCI_SLOT(entry.devfn), PCI_FUNC(entry.devfn)); continue; } - cper_print_aer(pdev, entry.severity, entry.regs); + pci_print_aer(pdev, entry.severity, entry.regs); if (entry.severity == AER_NONFATAL) pcie_do_recovery(pdev, pci_channel_io_normal, aer_root_reset); diff --git a/include/linux/aer.h b/include/linux/aer.h index 97f64ba1b34a..8f124b904314 100644 --- a/include/linux/aer.h +++ b/include/linux/aer.h @@ -64,7 +64,7 @@ static inline void pci_save_aer_state(struct pci_dev *dev) {} static inline void pci_restore_aer_state(struct pci_dev *dev) {} #endif -void cper_print_aer(struct pci_dev *dev, int aer_severity, +void pci_print_aer(struct pci_dev *dev, int aer_severity, struct aer_capability_regs *aer); int cper_severity_to_aer(int cper_severity); void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn, -- 2.34.1