PCI/ACPI: Tone down missing MCFG message

MCFG is an optional ACPI table.  Given there are machines without PCI (or
it is hidden) we have been receiving queries/complaints about what this
message means given it's being presented as an error.

Reduce the message severity.  The ACPI table list printed at boot will
continue to provide another way to detect when the table is missing.

Link: https://lore.kernel.org/r/20200908210359.569294-1-jeremy.linton@arm.com
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>

diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c
index 54b36b7ad47d95269e445cc11eb47039962fdc47..c8ef3bb5aa00529600850eaf03ce99ba5b790114 100644 (file)
--- a/drivers/acpi/pci_mcfg.c
+++ b/drivers/acpi/pci_mcfg.c
@@ -280,5 +280,5 @@ void __init pci_mmcfg_late_init(void)
 {
        int err = acpi_table_parse(ACPI_SIG_MCFG, pci_mcfg_parse);
        if (err)
-               pr_err("Failed to parse MCFG (%d)\n", err);
+               pr_debug("Failed to parse MCFG (%d)\n", err);
 }