3.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Andy Whitcroft <[email protected]> commit c5971456964290da7e98222892797b71ef793e62 upstream. We only need to regenerate the sysfs files when the capacity units change, avoid the update otherwise. The origin of this issue is dates way back to 2.6.38: da8aeb92d4853f37e281f11fddf61f9c7d84c3cd (ACPI / Battery: Update information on info notification and resume) Signed-off-by: Andy Whitcroft <[email protected]> Tested-by: Ralf Jung <[email protected]> Signed-off-by: Len Brown <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/acpi/battery.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -643,11 +643,19 @@ static int acpi_battery_update(struct ac static void acpi_battery_refresh(struct acpi_battery *battery) { + int power_unit; + if (!battery->bat.dev) return; + power_unit = battery->power_unit; + acpi_battery_get_info(battery); - /* The battery may have changed its reporting units. */ + + if (power_unit == battery->power_unit) + return; + + /* The battery has changed its reporting units. */ sysfs_remove_battery(battery); sysfs_add_battery(battery); } -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
