From 001dac87052903d6850c064737bab004bed94789 Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Tue, 2 Apr 2013 19:58:34 +0200 Subject: [PATCH] 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 Signed-off-by: Jiri Kosina --- drivers/hid/hid-wiimote-core.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c index 0fb8ab9..f1c7a11 100644 --- a/drivers/hid/hid-wiimote-core.c +++ b/drivers/hid/hid-wiimote-core.c @@ -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: -- 2.7.4