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ACPI: Introduce has_acpi_companion()

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Now that the ACPI companions of devices are represented by pointers
to struct fwnode_handle, it is not quite efficient to check whether
or not an ACPI companion of a device is present by evaluating the
ACPI_COMPANION() macro.

For this reason, introduce a special static inline routine for that,
has_acpi_companion(), and update the code to use it where applicable.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki
2015-03-16 23:49:08 +01:00
parent ce793486e2
commit ca5b74d267
4 changed files with 15 additions and 5 deletions
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4
drivers/acpi/glue.c
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@@ -168,7 +168,7 @@ int acpi_bind_one(struct device *dev, struct acpi_device *acpi_dev)
unsigned int node_id;
int retval = -EINVAL;
if (ACPI_COMPANION(dev)) {
if (has_acpi_companion(dev)) {
if (acpi_dev) {
dev_warn(dev, "ACPI companion already set\n");
return -EINVAL;
@@ -220,7 +220,7 @@ int acpi_bind_one(struct device *dev, struct acpi_device *acpi_dev)
list_add(&physical_node->node, physnode_list);
acpi_dev->physical_node_count++;
if (!ACPI_COMPANION(dev))
if (!has_acpi_companion(dev))
ACPI_COMPANION_SET(dev, acpi_dev);
acpi_physnode_link_name(physical_node_name, node_id);