On Tue, Jul 07, 2020 at 07:14:01PM -0500, Bjorn Helgaas wrote:
> From: Matt Jolly <Kangie@footclan.ninja>
>
> PCIe correctable errors are recovered by hardware with no need for software
> intervention (PCIe r5.0, sec 6.2.2.1).
>
> Reduce the log level of correctable errors from KERN_ERR to KERN_WARNING.
>
> The bug reports below are for correctable error logging. This doesn't fix
> the cause of those reports, but it may make the messages less alarming.
>
> [bhelgaas: commit log, use pci_printk() to avoid code duplication]
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=201517
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=196183
> Link: https://lore.kernel.org/r/20200618155511.16009-1-Kangie@footclan.ninja
> Signed-off-by: Matt Jolly <Kangie@footclan.ninja>
> Signed-off-by: Bjorn Helgaas <bhelg...@google.com>
I applied both of these to pci/error for v5.9.
> ---
> drivers/pci/pcie/aer.c | 25 +++++++++++++++----------
> 1 file changed, 15 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
> index 9176c8a968b9..ca886bf91fd9 100644
> --- a/drivers/pci/pcie/aer.c
> +++ b/drivers/pci/pcie/aer.c
> @@ -673,20 +673,23 @@ static void __aer_print_error(struct pci_dev *dev,
> {
> const char **strings;
> unsigned long status = info->status & ~info->mask;
> - const char *errmsg;
> + const char *level, *errmsg;
> int i;
>
> - if (info->severity == AER_CORRECTABLE)
> + if (info->severity == AER_CORRECTABLE) {
> strings = aer_correctable_error_string;
> - else
> + level = KERN_WARNING;
> + } else {
> strings = aer_uncorrectable_error_string;
> + level = KERN_ERR;
> + }
>
> for_each_set_bit(i, &status, 32) {
> errmsg = strings[i];
> if (!errmsg)
> errmsg = "Unknown Error Bit";
>
> - pci_err(dev, " [%2d] %-22s%s\n", i, errmsg,
> + pci_printk(level, dev, " [%2d] %-22s%s\n", i, errmsg,
> info->first_error == i ? " (First)" : "");
> }
> pci_dev_aer_stats_incr(dev, info);
> @@ -696,6 +699,7 @@ void aer_print_error(struct pci_dev *dev, struct
> aer_err_info *info)
> {
> int layer, agent;
> int id = ((dev->bus->number << 8) | dev->devfn);
> + const char *level;
>
> if (!info->status) {
> pci_err(dev, "PCIe Bus Error: severity=%s, type=Inaccessible,
> (Unregistered Agent ID)\n",
> @@ -706,13 +710,14 @@ void aer_print_error(struct pci_dev *dev, struct
> aer_err_info *info)
> layer = AER_GET_LAYER_ERROR(info->severity, info->status);
> agent = AER_GET_AGENT(info->severity, info->status);
>
> - pci_err(dev, "PCIe Bus Error: severity=%s, type=%s, (%s)\n",
> - aer_error_severity_string[info->severity],
> - aer_error_layer[layer], aer_agent_string[agent]);
> + level = (info->severity == AER_CORRECTABLE) ? KERN_WARNING : KERN_ERR;
> +
> + pci_printk(level, dev, "PCIe Bus Error: severity=%s, type=%s, (%s)\n",
> + aer_error_severity_string[info->severity],
> + aer_error_layer[layer], aer_agent_string[agent]);
>
> - pci_err(dev, " device [%04x:%04x] error status/mask=%08x/%08x\n",
> - dev->vendor, dev->device,
> - info->status, info->mask);
> + pci_printk(level, dev, " device [%04x:%04x] error
> status/mask=%08x/%08x\n",
> + dev->vendor, dev->device, info->status, info->mask);
>
> __aer_print_error(dev, info);
>
> --
> 2.25.1
>
