On Thu, 23 Nov 2023, Andy Shevchenko wrote: > On Thu, Nov 23, 2023 at 11:05:38AM +0000, Lee Jones wrote: > > On Fri, 03 Nov 2023, Andy Shevchenko wrote: > > ... > > > > - ret = sscanf(buf, "%u", &desired_brightness); > > "%u" (see man sscanf() for the details) > > ... > > > > + ret = kstrtou8(buf, 10, &desired_brightness); > > > > Where does 10 come from? > > See above. Hmmm ... I see that this is generally accepted. Although is looks like a recipe for bugs to me. It's a shame we don't have something that can take a variable, derives its type, then calculates the maximum length if converted to a string. Anyway, I'm probably babbling now ... -- Lee Jones [李琼斯]
