[PATCH V4 10/11] ACPI: introduce dummy container scan handler

Zhang Rui
2014-03-17T07:49:39Z

When CONFIG_ACPI_CONTAINER is cleared, platform devices would be
created for ACPI container objects.

Introduce a dummy container scan handler in this patch to prevent
these platform devices from being created.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
drivers/acpi/Makefile | 2 +-
drivers/acpi/container.c | 21 +++++++++++++++++++++
drivers/acpi/internal.h | 4 ----
3 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 2173e30..871d70d 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -63,7 +63,7 @@ obj-$(CONFIG_ACPI_FAN) += fan.o
obj-$(CONFIG_ACPI_VIDEO) += video.o
obj-$(CONFIG_ACPI_PCI_SLOT) += pci_slot.o
obj-$(CONFIG_ACPI_PROCESSOR) += processor.o
-obj-$(CONFIG_ACPI_CONTAINER) += container.o
+obj-y += container.o
obj-$(CONFIG_ACPI_THERMAL) += thermal.o
obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o
obj-$(CONFIG_ACPI_BATTERY) += battery.o
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 368f9dd..c2ec401 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -43,6 +43,8 @@ static const struct acpi_device_id container_device_ids[] = {
{"", 0},
};

+#ifdef CONFIG_ACPI_CONTAINER
+
static int acpi_container_offline(struct container_dev *cdev)
{
struct acpi_device *adev = ACPI_COMPANION(&cdev->dev);
@@ -110,3 +112,22 @@ void __init acpi_container_init(void)
{
acpi_scan_add_handler_with_hotplug(&container_handler, "container");
}
+
+#else
+
+static inline int container_device_attach(struct acpi_device *adev,
+ const struct acpi_device_id *not_used)
+{
+ return 1;
+}
+
+static struct acpi_scan_handler container_handler = {
+ .ids = container_device_ids,
+ .attach = container_device_attach,
+};
+
+void __init acpi_container_init(void)
+{
+ acpi_scan_add_handler(&container_handler);
+}
+#endif /* CONFIG_ACPI_CONTAINER */
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index a0c9368..253758a 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -32,11 +32,7 @@ void acpi_processor_init(void);
void acpi_platform_init(void);
void acpi_pnp_init(void);
int acpi_sysfs_init(void);
-#ifdef CONFIG_ACPI_CONTAINER
void acpi_container_init(void);
-#else
-static inline void acpi_container_init(void) {}
-#endif
#ifdef CONFIG_ACPI_DOCK
void acpi_dock_init(void);
#else
--
1.7.9.5