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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-11-22 00:02:19 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-11-24 02:43:47 +0100
commit99db5ff7fe0b4e1657423d7bbe2aa8f655dd02d1 (patch)
tree16f7b7203b451a951fb9bd1d0a0e29edebf7122c /drivers/acpi/device_sysfs.c
parent9c763584b7c8911106bb77af7e648bef09af9d80 (diff)
downloadlinux-99db5ff7fe0b4e1657423d7bbe2aa8f655dd02d1.tar.bz2
ACPI / property: Hierarchical properties support update
The definition document of the Hierarchical Properties Extension UUID for _DSD has been changed recently to allow local references to be used as sub-node link targets (previously, it only allowed strings to be used for that purpose). Update the code in drivers/acpi/property.c to reflect that change. Link: http://www.uefi.org/sites/default/files/resources/_DSD-hierarchical-data-extension-UUID-v1.1.pdf Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/device_sysfs.c')
-rw-r--r--drivers/acpi/device_sysfs.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
index 7b2c48fde4e2..24418932612e 100644
--- a/drivers/acpi/device_sysfs.c
+++ b/drivers/acpi/device_sysfs.c
@@ -52,7 +52,7 @@ struct acpi_data_node_attr {
static ssize_t data_node_show_path(struct acpi_data_node *dn, char *buf)
{
- return acpi_object_path(dn->handle, buf);
+ return dn->handle ? acpi_object_path(dn->handle, buf) : 0;
}
DATA_NODE_ATTR(path);
@@ -105,10 +105,10 @@ static void acpi_expose_nondev_subnodes(struct kobject *kobj,
init_completion(&dn->kobj_done);
ret = kobject_init_and_add(&dn->kobj, &acpi_data_node_ktype,
kobj, "%s", dn->name);
- if (ret)
- acpi_handle_err(dn->handle, "Failed to expose (%d)\n", ret);
- else
+ if (!ret)
acpi_expose_nondev_subnodes(&dn->kobj, &dn->data);
+ else if (dn->handle)
+ acpi_handle_err(dn->handle, "Failed to expose (%d)\n", ret);
}
}