Wow, many thanks.

So the read operation should return the total number of bytes, not a true/false int.

I need to read more about this operations.

Thanks

Lucas Tanure
+55 (19) 988176559

On Tue, May 27, 2014 at 10:05 AM, Bjørn Mork <bjorn@mork.no> wrote:

Lucas Tanure <tanure@linux.com> writes:

> So, My misc_drv_read returns 0, and it's ok. So why the command head didn't
> get the string ?

You told it that it got a string with length 0. And that's what it printed.

Bjørn