Re: [PATCH] w1: Add 1-wire slave device driver for DS28E04-100

Greg KH
2012-05-10T03:43:52Z

On Thu, May 10, 2012 at 04:43:50AM +0400, Evgeniy Polyakov wrote:
> On Wed, May 09, 2012 at 05:01:26PM -0700, Greg KH (greg@kroah.com) wrote:
> > Binary sysfs files should be "pass through" only, the kernel should not
> > touch the data involved in them at all, it is a pipe directly from the
> > kernel to userspace for binary blob data, like firmware images. You
> > should never do any processing of any binary file data at all in the
> > kernel.
>
> And if some of the data should be somehow changed, what interfact should
> be used? Also, Markus, does DS28E04 change written/read data when doing
> IO?
>
> I must admit, I never heared that binary sysfs files have to follow this
> constraint.

For some reason I thought I had documented it years ago, but in digging
through the Documentation directory, I don't see it anywhere, sorry
about that.

I'll add it to my ever-growing TODO list...

thanks,

greg k-h