  static ssize_t synaptics_rmi0_flipx_store(struct device *dev,  struct device_attribute *attr, const char *buf, size_t count) {  unsigned int input;  struct synaptics_rmi0_data *rmi0_data = dev_get_drvdata(dev);   if (sscanf(buf, "%u", &input) != 0)   return -EINVAL;   rmi0_data->flip_