sh: switch to generic old sigsuspend()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/sh/Kconfig

@@ -41,6 +41,7 @@ config SUPERH
 	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
 	select MODULES_USE_ELF_RELA
 	select GENERIC_SIGALTSTACK
+	select OLD_SIGSUSPEND
 	help
 	  The SuperH is a RISC processor targeted for use in embedded systems
 	  and consumer electronics; it was also used in the Sega Dreamcast

arch/sh/include/asm/syscalls_32.h

@@ -9,7 +9,6 @@
 
 struct pt_regs;
 
-asmlinkage int sys_sigsuspend(old_sigset_t mask);
 asmlinkage int sys_sigaction(int sig, const struct old_sigaction __user *act,
 			     struct old_sigaction __user *oact);
 asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5,

arch/sh/kernel/signal_32.c

@@ -46,17 +46,6 @@ struct fdpic_func_descriptor {
  */
 #define UNWINDGUARD 64
 
-/*
- * Atomically swap in the new signal mask, and wait for a signal.
- */
-asmlinkage int
-sys_sigsuspend(old_sigset_t mask)
-{
-	sigset_t blocked;
-	siginitset(&blocked, mask);
-	return sigsuspend(&blocked);
-}
-
 asmlinkage int
 sys_sigaction(int sig, const struct old_sigaction __user *act,
 	      struct old_sigaction __user *oact)

arch/sh/kernel/signal_64.c

@@ -127,17 +127,6 @@ static void do_signal(struct pt_regs *regs)
 	restore_saved_sigmask();
 }
 
-/*
- * Atomically swap in the new signal mask, and wait for a signal.
- */
-asmlinkage int
-sys_sigsuspend(old_sigset_t mask)
-{
-	sigset_t blocked;
-	siginitset(&blocked, mask);
-	return sigsuspend(&blocked);
-}
-
 asmlinkage int
 sys_sigaction(int sig, const struct old_sigaction __user *act,
 	      struct old_sigaction __user *oact)