ACPI: battery: asynchronous init

The battery driver tends to take quite some time to initialize
(100ms-300ms is quite typical).
This patch initializes the batter driver asynchronously, so that other
things in the kernel can initialize in parallel to this 300 msec.

As part of this, the battery driver had to move to the back
of the ACPI init order (hence the Makefile change).
Without this move, the next ACPI driver would just block
on the ACPI/devicee layer semaphores until the battery driver was
done anyway, not gaining any boot time.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index b130ea0d0759..298caf6862b6 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -37,7 +37,6 @@ obj-y				+= scan.o
 # Keep EC driver first. Initialization of others depend on it.
 obj-y                           += ec.o
 obj-$(CONFIG_ACPI_AC)           += ac.o
-obj-$(CONFIG_ACPI_BATTERY)      += battery.o
 obj-$(CONFIG_ACPI_BUTTON)       += button.o
 obj-$(CONFIG_ACPI_FAN)          += fan.o
 obj-$(CONFIG_ACPI_DOCK)         += dock.o
@@ -57,5 +56,6 @@ obj-$(CONFIG_ACPI_DEBUG)	+= debug.o
 obj-$(CONFIG_ACPI_NUMA)         += numa.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)       += acpi_memhotplug.o
 obj-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o
+obj-$(CONFIG_ACPI_BATTERY)      += battery.o
 obj-$(CONFIG_ACPI_SBS)          += sbshc.o
 obj-$(CONFIG_ACPI_SBS)          += sbs.o