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HID: wiimote: use unique battery names 

Battery device names must be unique, otherwise registration fails if
multiple Wii Remotes are connected.

This breaks the sysfs API, but there is no known application that uses the
Wii Remote battery that I know of so we should go ahead and apply this.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
David Herrmann 2013-04-02 19:58:34 +02:00 committed by Jiri Kosina
parent f8966048c1
commit 001dac8705
1 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/hid/hid-wiimote-core.c
View File

@ -1160,6 +1160,7 @@ static void wiimote_destroy(struct wiimote_data *wdata)
wiimote_leds_destroy(wdata);
power_supply_unregister(&wdata->battery);
kfree(wdata->battery.name);
input_unregister_device(wdata->accel);
input_unregister_device(wdata->ir);
input_unregister_device(wdata->input);
@ -1216,9 +1217,14 @@ static int wiimote_hid_probe(struct hid_device *hdev,
wdata->battery.properties = wiimote_battery_props;
wdata->battery.num_properties = ARRAY_SIZE(wiimote_battery_props);
wdata->battery.get_property = wiimote_battery_get_property;
wdata->battery.name = "wiimote_battery";
wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
wdata->battery.use_for_apm = 0;
wdata->battery.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
wdata->hdev->uniq);
if (!wdata->battery.name) {
ret = -ENOMEM;
goto err_battery_name;
}
ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
if (ret) {
@ -1254,6 +1260,8 @@ err_free:
return ret;
err_battery:
kfree(wdata->battery.name);
err_battery_name:
input_unregister_device(wdata->input);
wdata->input = NULL;
err_input: