From: Anton Vorontsov Date: Wed, 2 Dec 2009 21:24:51 +0000 (+0300) Subject: power_supply_sysfs: Handle -ENODATA in a special way X-Git-Tag: v2.6.33-rc1~81^2 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=9d233e8bb92e355fd20b14745c1d9ff402e0e685;p=~shefty%2Frdma-dev.git power_supply_sysfs: Handle -ENODATA in a special way There are cases when some device can not report any meaningful value, e.g. TWL4030 charger can report voltage only when charging is active. In these cases drivers will return -ENODATA, and we shouldn't flood kernel log with error messages. Signed-off-by: Anton Vorontsov --- diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c index 08144393d64..c790e0c77d4 100644 --- a/drivers/power/power_supply_sysfs.c +++ b/drivers/power/power_supply_sysfs.c @@ -65,7 +65,10 @@ static ssize_t power_supply_show_property(struct device *dev, ret = psy->get_property(psy, off, &value); if (ret < 0) { - if (ret != -ENODEV) + if (ret == -ENODATA) + dev_dbg(dev, "driver has no data for `%s' property\n", + attr->attr.name); + else if (ret != -ENODEV) dev_err(dev, "driver failed to report `%s' property\n", attr->attr.name); return ret;