On Tue,  4 Feb 2014 12:43:49 -0800 Sebastian Capella [off-list ref] wrote:

kstrdup_trimnl creates a duplicate of the passed in
null-terminated string.  If a trailing newline is found, it
is removed before duplicating.  This is useful for strings
coming from sysfs that often include trailing whitespace due to
user input.

hm, why?  I doubt if any caller of this wants to retain leading and/or
trailing spaces and/or tabs.