Input: wacom - use a uniq name for the battery device
The current implementation uses "wacom_battery" as a generic name for
batteries. This prevents us to have two Wacom devices with a battery
attached as the power system will complain about the name which is already
registered.
Use an incremental name for each battery attached.
Related bug:
https://sourceforge.net/p/linuxwacom/bugs/248/
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Przemo Firszt <przemo@firszt.eu>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index f8744c4..a27404d 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -809,12 +809,16 @@
static int wacom_initialize_battery(struct wacom *wacom)
{
int error = 0;
+ static atomic_t battery_no = ATOMIC_INIT(0);
+ unsigned long n;
if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
+ n = atomic_inc_return(&battery_no) - 1;
wacom->battery.properties = wacom_battery_props;
wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
wacom->battery.get_property = wacom_battery_get_property;
- wacom->battery.name = "wacom_battery";
+ sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
+ wacom->battery.name = wacom->wacom_wac.bat_name;
wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
wacom->battery.use_for_apm = 0;
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index 8a042ac..6cdf707 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -154,6 +154,7 @@
struct wacom_wac {
char name[WACOM_NAME_MAX];
char pad_name[WACOM_NAME_MAX];
+ char bat_name[WACOM_NAME_MAX];
unsigned char data[WACOM_PKGLEN_MAX];
int tool[2];
int id[2];