From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Date: Tue, 9 Jun 2020 16:22:39 +0300
Subject: ACPI: property: use cached name in acpi_fwnode_get_named_child_node()
Patch-mainline: v5.9-rc1
Git-commit: cbdd865a94aee4f21e7be330e622d9a8b5ad2db8
References: jsc#SLE-16407
There is no need to re-evaluate the object name.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
drivers/acpi/property.c | 14 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -606,13 +606,7 @@ static struct fwnode_handle *
acpi_fwnode_get_named_child_node(const struct fwnode_handle *fwnode,
const char *childname)
{
- char name[ACPI_PATH_SEGMENT_LENGTH];
struct fwnode_handle *child;
- struct acpi_buffer path;
- acpi_status status;
-
- path.length = sizeof(name);
- path.pointer = name;
fwnode_for_each_child_node(fwnode, child) {
if (is_acpi_data_node(child)) {
@@ -621,12 +615,8 @@ acpi_fwnode_get_named_child_node(const s
continue;
}
- status = acpi_get_name(ACPI_HANDLE_FWNODE(child),
- ACPI_SINGLE_NAME, &path);
- if (ACPI_FAILURE(status))
- break;
-
- if (!strncmp(name, childname, ACPI_NAMESEG_SIZE))
+ if (!strncmp(acpi_device_bid(to_acpi_device_node(child)),
+ childname, ACPI_NAMESEG_SIZE))
return child;
}