parisc: switch to generic compat rt_sigpending()

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

arch/parisc/Kconfig

@@ -25,6 +25,7 @@ config PARISC
 	select CLONE_BACKWARDS
 	select GENERIC_SIGALTSTACK
 	select GENERIC_COMPAT_RT_SIGPROCMASK
+	select GENERIC_COMPAT_RT_SIGPENDING
 
 	help
 	  The PA-RISC microprocessor is designed by Hewlett-Packard and used

arch/parisc/kernel/signal32.c

@@ -60,31 +60,6 @@ sigset_64to32(compat_sigset_t *s32, sigset_t *s64)
 	s32->sig[1] = (s64->sig[0] >> 32) & 0xffffffffUL;
 }
 
-static int
-put_sigset32(compat_sigset_t __user *up, sigset_t *set, size_t sz)
-{
-	compat_sigset_t s;
-
-	if (sz != sizeof *set)
-		return -EINVAL;
-	sigset_64to32(&s, set);
-
-	return copy_to_user(up, &s, sizeof s);
-}
-
-int sys32_rt_sigpending(compat_sigset_t __user *uset, unsigned int sigsetsize)
-{
-	int ret;
-	sigset_t set;
-
-	KERNEL_SYSCALL(ret, sys_rt_sigpending, (sigset_t __user *)&set, sigsetsize);
-
-	if (!ret && put_sigset32(uset, &set, sigsetsize))
-		return -EFAULT;
-
-	return ret;
-}
-
 long
 sys32_rt_sigaction(int sig, const struct sigaction32 __user *act, struct sigaction32 __user *oact,
                  size_t sigsetsize)

arch/parisc/kernel/syscall_table.S

@@ -267,7 +267,7 @@
 	ENTRY_SAME(rt_sigreturn_wrapper)
 	ENTRY_DIFF(rt_sigaction)
 	ENTRY_COMP(rt_sigprocmask)	/* 175 */
-	ENTRY_DIFF(rt_sigpending)
+	ENTRY_COMP(rt_sigpending)
 	ENTRY_COMP(rt_sigtimedwait)
 	/* even though the struct siginfo_t is different, it appears like
 	 * all the paths use values which should be same wide and narrow.