Tssk.  Apparently Al hadn't checked commit 
c52c2ddc1dfa ("alpha: switch
osf_sigprocmask() to use of sigprocmask()") at all. It doesn't compile.
Fixed as per suggestions from Michael Cree.
Reported-by: Michael Cree <mcree@orcon.net.nz>
Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 
        unsigned long res;
 
        siginitset(&mask, newmask & ~_BLOCKABLE);
-       res = siprocmask(how, &mask, &oldmask);
+       res = sigprocmask(how, &mask, &oldmask);
        if (!res) {
                force_successful_syscall_return();
-               res = oldmask->sig[0];
+               res = oldmask.sig[0];
        }
        return res;
 }