Re: [PATCH v4] lib/string: Introduce sysfs_streqcase

[Greg Kroah-Hartman]

On Thu, Apr 08, 2021 at 11:51:32PM -0700, Andrew Morton wrote:
> On Fri, 9 Apr 2021 08:44:39 +0200 Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> 
> > On Thu, Apr 08, 2021 at 10:05:02PM -0700, Andrew Morton wrote:
> > > On Thu,  8 Apr 2021 15:06:05 +0200 Gioh Kim <gi-oh.kim@xxxxxxxxx> wrote:
> > > 
> > > > As the name shows, it checks if strings are equal in case insensitive
> > > > manner.
> > > 
> > > Peh.  Who would die if we simply made sysfs_streq() case-insensitive?
> > 
> > I doubt anyone, let's do that instead.
> 
> There's a risk that people will write scripts/config/etc on a 5.13+
> kernel and then find that they malfunction on earlier kernels...
> 

That's not a regression, that is a "newer kernels have newer features"
issue :)