acpi_fwnode_get_reference_args currently returns -EINVAL if a property isn't found. -EINVAL is returned on parse error as well, and a non-existent property is, for a list of references with arguments, usually effectively the same as a property without entries. Thus use -ENODATA to signal this as well. -EINVAL is still used to tell about parse errors. Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> --- drivers/acpi/property.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index c1c216163de3..c6c777341023 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -1211,6 +1211,9 @@ acpi_fwnode_get_reference_args(const struct fwnode_handle *fwnode, unsigned int i; int ret; + if (acpi_node_prop_get(fwnode, prop, NULL)) + return -ENODATA; + ret = __acpi_node_get_property_reference(fwnode, prop, index, args_count, &acpi_args); if (ret < 0) -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
