diff options
Diffstat (limited to 'drivers/of/property.c')
| -rw-r--r-- | drivers/of/property.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/of/property.c b/drivers/of/property.c index 9a50ad25906e..967f79b59016 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -432,6 +432,9 @@ EXPORT_SYMBOL_GPL(of_property_read_variable_u64_array); * property does not have a value, and -EILSEQ if the string is not * null-terminated within the length of the property data. * + * Note that the empty string "" has length of 1, thus -ENODATA cannot + * be interpreted as an empty string. + * * The out_string pointer is modified only if a valid string can be decoded. */ int of_property_read_string(const struct device_node *np, const char *propname, @@ -440,7 +443,7 @@ int of_property_read_string(const struct device_node *np, const char *propname, const struct property *prop = of_find_property(np, propname, NULL); if (!prop) return -EINVAL; - if (!prop->value) + if (!prop->length) return -ENODATA; if (strnlen(prop->value, prop->length) >= prop->length) return -EILSEQ; |