sparse reports sound/ac97/bus.c:465:1: sparse: sparse: symbol 'dev_attr_vendor_id' was not declared. Should it be static? This variable is only used in its defining file, so it should be static. Reported-by: kernel test robot <lkp@xxxxxxxxx> Closes: https://lore.kernel.org/oe-kbuild-all/202307242300.Oy0Dp2QI-lkp@xxxxxxxxx/ Signed-off-by: Yu Liao <liaoyu15@xxxxxxxxxx> --- sound/ac97/bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/ac97/bus.c b/sound/ac97/bus.c index 6067c04ce4c0..3173e9d98927 100644 --- a/sound/ac97/bus.c +++ b/sound/ac97/bus.c @@ -462,7 +462,7 @@ static ssize_t vendor_id_show(struct device *dev, return sysfs_emit(buf, "%08x", codec->vendor_id); } -DEVICE_ATTR_RO(vendor_id); +static DEVICE_ATTR_RO(vendor_id); static struct attribute *ac97_dev_attrs[] = { &dev_attr_vendor_id.attr, -- 2.25.1