proc_create() needs to check that the name of an entry to be created does
not contain a '/' character.

To test, I hacked the ibmveth driver to try to call request_irq with a
bogus "foo/bar" devname.  The creation of the /proc/irq/1234/xxx entry
silently fails, as intended.  Perhaps the irq code should be made to check
for the failure.
Signed-off-by: Nathan Lynch <nathanl@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>