From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alan Jenkins Subject: [PATCH 1/3] ACPI: battery: Fix CONFIG_ACPI_SYSFS_POWER=n Date: Tue, 12 May 2009 15:50:12 +0100 Message-ID: <4A098CA4.40708@tuffmail.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ew0-f176.google.com ([209.85.219.176]:62837 "EHLO mail-ew0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752300AbZELOuQ (ORCPT ); Tue, 12 May 2009 10:50:16 -0400 Received: by ewy24 with SMTP id 24so25917ewy.37 for ; Tue, 12 May 2009 07:50:15 -0700 (PDT) Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux acpi Cc: Alexey Starikovskiy Disabling CONFIG_ACPI_SYSFS_POWER changes the behaviour of acpi_battery_update(). It will call acpi_battery_get_info() even if the battery is not present. I haven't noticed this causing any problem, but it does look like a bad idea. Signed-off-by: Alan Jenkins diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index b0de631..2ccc87e 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -501,13 +501,13 @@ static int acpi_battery_update(struct acpi_battery *battery) result = acpi_battery_get_status(battery); if (result) return result; -#ifdef CONFIG_ACPI_SYSFS_POWER if (!acpi_battery_present(battery)) { +#ifdef CONFIG_ACPI_SYSFS_POWER sysfs_remove_battery(battery); +#endif battery->update_time = 0; return 0; } -#endif if (!battery->update_time || old_present != acpi_battery_present(battery)) { result = acpi_battery_get_info(battery);