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PCI/DPC: Print all TLP Prefixes, not just the first
[ Upstream commit6568d82512
] The TLP Prefix Log Register consists of multiple DWORDs (PCIe r6.1 sec 7.9.14.13) but the loop in dpc_process_rp_pio_error() keeps reading from the first DWORD, so we print only the first PIO TLP Prefix (duplicated several times), and we never print the second, third, etc., Prefixes. Add the iteration count based offset calculation into the config read. Fixes:f20c4ea49e
("PCI/DPC: Add eDPC support") Link: https://lore.kernel.org/r/20240118110815.3867-1-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> [bhelgaas: add user-visible details to commit log] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -234,7 +234,7 @@ static void dpc_process_rp_pio_error(struct pci_dev *pdev)
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for (i = 0; i < pdev->dpc_rp_log_size - 5; i++) {
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pci_read_config_dword(pdev,
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cap + PCI_EXP_DPC_RP_PIO_TLPPREFIX_LOG, &prefix);
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cap + PCI_EXP_DPC_RP_PIO_TLPPREFIX_LOG + i * 4, &prefix);
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pci_err(pdev, "TLP Prefix Header: dw%d, %#010x\n", i, prefix);
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}
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clear_status:
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