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Subject[PATCH] ACPI / battery: ensure acpi_battery_init() has finish
Date
Make sure that async function scheduled with async_schedule() has already
been executed.

Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
drivers/acpi/battery.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 9c676a6f32ce..547e627611e0 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -70,6 +70,7 @@ MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
MODULE_DESCRIPTION("ACPI Battery Driver");
MODULE_LICENSE("GPL");

+static async_cookie_t async_cookie;
static int battery_bix_broken_package;
static int battery_notification_delay_ms;
static unsigned int cache_time = 1000;
@@ -1313,12 +1314,13 @@ static int __init acpi_battery_init(void)
if (acpi_disabled)
return -ENODEV;

- async_schedule(acpi_battery_init_async, NULL);
+ async_cookie = async_schedule(acpi_battery_init_async, NULL);
return 0;
}

static void __exit acpi_battery_exit(void)
{
+ async_synchronize_cookie(async_cookie);
acpi_bus_unregister_driver(&acpi_battery_driver);
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_unlock_battery_dir(acpi_battery_dir);

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