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PCI: Tidy config space save/restore messages
Update config space save/restore debug messages so they line up better. Previously: nvme 0000:05:00.0: saving config space at offset 0x4 (reading 0x20100006) nvme 0000:05:00.0: saving config space at offset 0x8 (reading 0x1080200) nvme 0000:05:00.0: saving config space at offset 0xc (reading 0x0) nvme 0000:05:00.0: restoring config space at offset 0x4 (was 0x0, writing 0x20100006) Now: nvme 0000:05:00.0: save config 0x04: 0x20100006 nvme 0000:05:00.0: save config 0x08: 0x01080200 nvme 0000:05:00.0: save config 0x0c: 0x00000000 nvme 0000:05:00.0: restore config 0x04: 0x00000000 -> 0x20100006 No functional change intended. Enable these messages by setting CONFIG_DYNAMIC_DEBUG=y and adding 'dyndbg="file drivers/pci/* +p"' to kernel parameters. Link: https://lore.kernel.org/r/20230823191831.476579-1-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org>
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1 changed files with 2 additions and 2 deletions
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@ -1681,7 +1681,7 @@ int pci_save_state(struct pci_dev *dev)
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/* XXX: 100% dword access ok here? */
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for (i = 0; i < 16; i++) {
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pci_read_config_dword(dev, i * 4, &dev->saved_config_space[i]);
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pci_dbg(dev, "saving config space at offset %#x (reading %#x)\n",
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pci_dbg(dev, "save config %#04x: %#010x\n",
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i * 4, dev->saved_config_space[i]);
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}
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dev->state_saved = true;
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@ -1712,7 +1712,7 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
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return;
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for (;;) {
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pci_dbg(pdev, "restoring config space at offset %#x (was %#x, writing %#x)\n",
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pci_dbg(pdev, "restore config %#04x: %#010x -> %#010x\n",
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offset, val, saved_val);
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pci_write_config_dword(pdev, offset, saved_val);
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if (retry-- <= 0)
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