Hi! > +static ssize_t multi_intensity_show(struct device *dev, > + struct device_attribute *intensity_attr, > + char *buf) > +{ > + struct led_classdev *led_cdev = dev_get_drvdata(dev); > + struct led_classdev_mc *mcled_cdev = lcdev_to_mccdev(led_cdev); > + int len = 0; > + int i; > + > + for (i = 0; i < mcled_cdev->num_colors; i++) { > + len += sprintf(buf + len, "%d", > + mcled_cdev->subled_info[i].intensity); > + if (i < mcled_cdev->num_colors) > + len += sprintf(buf + len, " "); Always false, AFAICT. Pavel