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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-11-29 19:27:34 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-12-07 04:05:50 +0400
commite3f02c5228c4b600abf6ca243301176f25553bd5 (patch)
treea3b5372f137fb8396ffe036e4c0c3cabea06b838 /drivers/acpi/glue.c
parent9c5ad36d987a1b06f6b0b9dc7bc61a45d277455d (diff)
downloadlinux-e3f02c5228c4b600abf6ca243301176f25553bd5.tar.xz
ACPI / bind: Rework struct acpi_bus_type
Replace the .find_device function pointer in struct acpi_bus_type with a new one, .find_companion, that is supposed to point to a function returning struct acpi_device pointer (instead of an int) and takes one argument (instead of two). This way the role of this callback is more clear and the implementation of it can be more straightforward. Update all of the users of struct acpi_bus_type (PCI, PNP/ACPI and USB) to reflect the structure change. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Lan Tianyu <tianyu.lan@intel.com> # for USB/ACPI
Diffstat (limited to 'drivers/acpi/glue.c')
-rw-r--r--drivers/acpi/glue.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index c0d18b2145c1..7608d66f289b 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -37,7 +37,7 @@ int register_acpi_bus_type(struct acpi_bus_type *type)
{
if (acpi_disabled)
return -ENODEV;
- if (type && type->match && type->find_device) {
+ if (type && type->match && type->find_companion) {
down_write(&bus_type_sem);
list_add_tail(&type->list, &bus_type_list);
up_write(&bus_type_sem);
@@ -302,17 +302,19 @@ EXPORT_SYMBOL_GPL(acpi_unbind_one);
static int acpi_platform_notify(struct device *dev)
{
struct acpi_bus_type *type = acpi_get_bus_type(dev);
- acpi_handle handle;
int ret;
ret = acpi_bind_one(dev, NULL);
if (ret && type) {
- ret = type->find_device(dev, &handle);
- if (ret) {
+ struct acpi_device *adev;
+
+ adev = type->find_companion(dev);
+ if (!adev) {
DBG("Unable to get handle for %s\n", dev_name(dev));
+ ret = -ENODEV;
goto out;
}
- ret = acpi_bind_one(dev, handle);
+ ret = acpi_bind_one(dev, adev->handle);
if (ret)
goto out;
}