Hi!

str_has_prefix() is based on sizes and lengths, which means it must
overload the valid length 0 to mean not found.  This is a typical
consequence of choosing to design an API around sizes and lengths, and
vanishes when moving to pointer-based similar APIs.

This patch set adds strprefix(), deprecates str_has_prefix(), and uses
strprefix() in one place to fix a bug reported by Bartosz.

We can later work on replacing the other uses of str_has_prefix(), which
might hide similar bugs.

Testing
~~~~~~~

I've built this patch set with 'allmodconfig'.  I've not run the
resulting kernel, though.


Have a lovely day!
Alex

Alejandro Colomar (2):
  string: Add strprefix(), and deprecate str_has_prefix()
  device property: Fix fwnode_name_eq() for empty node names

 drivers/base/property.c |  5 +----
 include/linux/string.h  | 19 ++++++++++++++++++-
 2 files changed, 19 insertions(+), 5 deletions(-)

Range-diff against v0:
-:  ------------ > 1:  9c81f6f62fd0 string: Add strprefix(), and deprecate str_has_prefix()
-:  ------------ > 2:  37eafcd682b0 device property: Fix fwnode_name_eq() for empty node names
-- 
2.55.0