On Mon, Apr 15, 2019 at 03:09:27PM +0300, Heikki Krogerus wrote: > +static ssize_t do_flash_show(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + return sprintf(buf, "[Usage]\n" > + "1) copy ccg_boot.cyacd /lib/firmware/\n" > + "2) copy ccg_primary.cyacd /lib/firmware/\n" > + "3) copy ccg_secondary.cyacd /lib/firmware/\n" > + "4) echo 1 > do_flash\n"); > +} That is cute, but no, the kernel does NOT provide built-in help texts for sysfs files. If you know of any existing ones that do this, please point them out to me and I will go delete them from the tree. sysfs is "one value per file", and a "multi-line-help-text" is not a single value. That is what the Documentation/ABI files are for, which I do not see an update for in this patch so I can not take it, sorry :( thanks, greg k-h