86 lines
3.1 KiB
Diff
86 lines
3.1 KiB
Diff
From kyle@infradead.org Wed Sep 22 18:35:38 2010
|
|
From: Matthew Garrett <mjg@redhat.com>
|
|
To: linux-acpi@vger.kernel.org
|
|
Cc: linux-kernel@vger.kernel.org, Matthew Garrett <mjg@redhat.com>
|
|
Subject: [PATCH] acpi: Update battery information on notification 0x81
|
|
Date: Mon, 16 Aug 2010 16:32:19 -0400
|
|
|
|
A notification event 0x81 from an ACPI battery device requires us to
|
|
re-read the battery information structure. Do so, and if the battery's
|
|
reporting units have changed (as is the case on some Thinkpads) destroy
|
|
and recreate the battery in order to populate the fields correctly.
|
|
|
|
Signed-off-by: Matthew Garrett <mjg@redhat.com>
|
|
---
|
|
drivers/acpi/battery.c | 20 +++++++++++++++-----
|
|
1 files changed, 15 insertions(+), 5 deletions(-)
|
|
|
|
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
|
|
index 95649d3..2a774a8 100644
|
|
--- a/drivers/acpi/battery.c
|
|
+++ b/drivers/acpi/battery.c
|
|
@@ -605,9 +605,10 @@ static void acpi_battery_quirks2(struct acpi_battery *battery)
|
|
}
|
|
}
|
|
|
|
-static int acpi_battery_update(struct acpi_battery *battery)
|
|
+static int acpi_battery_update(struct acpi_battery *battery, bool get_info)
|
|
{
|
|
int result, old_present = acpi_battery_present(battery);
|
|
+ int old_power_unit = battery->power_unit;
|
|
result = acpi_battery_get_status(battery);
|
|
if (result)
|
|
return result;
|
|
@@ -628,6 +629,14 @@ static int acpi_battery_update(struct acpi_battery *battery)
|
|
sysfs_add_battery(battery);
|
|
result = acpi_battery_get_state(battery);
|
|
acpi_battery_quirks2(battery);
|
|
+ if (get_info) {
|
|
+ acpi_battery_get_info(battery);
|
|
+ if (old_power_unit != battery->power_unit) {
|
|
+ /* The battery has changed its reporting units */
|
|
+ sysfs_remove_battery(battery);
|
|
+ sysfs_add_battery(battery);
|
|
+ }
|
|
+ }
|
|
return result;
|
|
}
|
|
|
|
@@ -803,7 +812,7 @@ static print_func acpi_print_funcs[ACPI_BATTERY_NUMFILES] = {
|
|
static int acpi_battery_read(int fid, struct seq_file *seq)
|
|
{
|
|
struct acpi_battery *battery = seq->private;
|
|
- int result = acpi_battery_update(battery);
|
|
+ int result = acpi_battery_update(battery, false);
|
|
return acpi_print_funcs[fid](seq, result);
|
|
}
|
|
|
|
@@ -914,7 +923,8 @@ static void acpi_battery_notify(struct acpi_device *device, u32 event)
|
|
#ifdef CONFIG_ACPI_SYSFS_POWER
|
|
old = battery->bat.dev;
|
|
#endif
|
|
- acpi_battery_update(battery);
|
|
+ acpi_battery_update(battery, (event == ACPI_BATTERY_NOTIFY_INFO ? true
|
|
+ : false));
|
|
acpi_bus_generate_proc_event(device, event,
|
|
acpi_battery_present(battery));
|
|
acpi_bus_generate_netlink_event(device->pnp.device_class,
|
|
@@ -943,7 +953,7 @@ static int acpi_battery_add(struct acpi_device *device)
|
|
if (ACPI_SUCCESS(acpi_get_handle(battery->device->handle,
|
|
"_BIX", &handle)))
|
|
set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags);
|
|
- acpi_battery_update(battery);
|
|
+ acpi_battery_update(battery, false);
|
|
#ifdef CONFIG_ACPI_PROCFS_POWER
|
|
result = acpi_battery_add_fs(device);
|
|
#endif
|
|
@@ -984,7 +994,7 @@ static int acpi_battery_resume(struct acpi_device *device)
|
|
return -EINVAL;
|
|
battery = acpi_driver_data(device);
|
|
battery->update_time = 0;
|
|
- acpi_battery_update(battery);
|
|
+ acpi_battery_update(battery, true);
|
|
return 0;
|
|
}
|
|
|