On Wed, Aug 23, 2023 at 9:19 PM Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote:
>
> From: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
>
> 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.
>
> Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rafael@xxxxxxxxxx>
> ---
> drivers/pci/pci.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index 60230da957e0..920c161575d4 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -1681,7 +1681,7 @@ int pci_save_state(struct pci_dev *dev)
> /* XXX: 100% dword access ok here? */
> for (i = 0; i < 16; i++) {
> pci_read_config_dword(dev, i * 4, &dev->saved_config_space[i]);
> - pci_dbg(dev, "saving config space at offset %#x (reading %#x)\n",
> + pci_dbg(dev, "save config %#04x: %#010x\n",
> i * 4, dev->saved_config_space[i]);
> }
> dev->state_saved = true;
> @@ -1712,7 +1712,7 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
> return;
>
> for (;;) {
> - pci_dbg(pdev, "restoring config space at offset %#x (was %#x, writing %#x)\n",
> + pci_dbg(pdev, "restore config %#04x: %#010x -> %#010x\n",
> offset, val, saved_val);
> pci_write_config_dword(pdev, offset, saved_val);
> if (retry-- <= 0)
> --
> 2.34.1
>
