getting an 'error: undefined style' on style customization

[Nick]

HI all,

I can safely M-x c-set-style and choose my style (linux-c-mode) and
emacs will load properly and work just fine. However, when i try to M-x
linux-c-mode after launching emacs before editing a file (or even
selecting it), it gives me the 'error: undefined style' error message.
How can i fix that? My linux-c-mode is as follows.

(defun linux-c-mode()
  "C mode with adjusted defaults for use with the Linux Kernel."
  (interactive)
  (c-mode)
  (c-set-style "gnu")
  (setq tab-width 8)
  (setq indent-tabs-mode nil)
  (setq c-basic-offset 8)
  (add-hook 'c-mode-hook 'linux-c-mode))

Any help is appreciated.

Nick