char_index        937 drivers/hid/hid-logitech-hidpp.c 	u8 feature_index, u8 char_index, char *device_name, int len_buf)
char_index        944 drivers/hid/hid-logitech-hidpp.c 		CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME, &char_index, 1,