As we already applied a workaround for the off-by-1 issue, it's good to add extra message "applying workaround" to make people less uneasy to see FW_BUG message in the boot log. Signed-off-by: Hanjun Guo <guohanjun@xxxxxxxxxx> --- v2: - Print the extra message only for rid_in == map->input_base; - Still based on top of for-next/acpi branch of ARM64 repo drivers/acpi/arm64/iort.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index b011d25..6e445bc 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -332,6 +332,8 @@ static int iort_id_map(struct acpi_iort_id_mapping *map, u8 type, u32 rid_in, map, rid_in); if (rid_in != map->input_base) return -ENXIO; + + pr_err(FW_BUG "applying workaround.\n"); } *rid_out = map->output_base + (rid_in - map->input_base); -- 1.7.12.4