lm90_update_confreg
lm90_update_confreg(data, data->config & ~0x80);
lm90_update_confreg(data, config);
lm90_update_confreg(data, data->config | 0x80);
return lm90_update_confreg(data, config);
err = lm90_update_confreg(data, config | 0x40);
lm90_update_confreg(data, config);
err = lm90_update_confreg(data, val <= data->faultqueue_depth / 2 ?