From b23fffd778c312b8fb258d342051fcbdf6712128 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 20 Jan 2011 13:14:10 -0800 Subject: [PATCH] ACPI / Battery: remove battery refresh on resume This partially reverts commit da8aeb92d4853f37e281f11fddf61f9c7d84c3cd ("ACPI / Battery: Update information on info notification and resume"), which causes a hang on resume on at least some machines. This bug was bisected on an ASUS EeePC 901, which hangs at resume time if we do that "acpi_battery_refresh(battery)" in the battery resume function. Rafael suspects we'll still need to refresh the sysfs files upon resume, but that that can be done from a PM notifier (that will run after thawing user space). Bisected-and-tested-by: Linus Torvalds Cc: Matthew Garrett Cc: Len Brown Acked-by: Rafael J. Wysocki Signed-off-by: Linus Torvalds --- drivers/acpi/battery.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 68bc227..ac1a599 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -998,7 +998,6 @@ static int acpi_battery_resume(struct acpi_device *device) if (!device) return -EINVAL; battery = acpi_driver_data(device); - acpi_battery_refresh(battery); battery->update_time = 0; acpi_battery_update(battery); return 0; -- 2.7.4