sparc: switch to generic compat rt_sigprocmask(2)

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

arch/sparc/Kconfig

@@ -43,6 +43,7 @@ config SPARC
 	select MODULES_USE_ELF_RELA
 	select ODD_RT_SIGACTION
 	select GENERIC_SIGALTSTACK
+	select GENERIC_COMPAT_RT_SIGPROCMASK
 
 config SPARC32
 	def_bool !64BIT

arch/sparc/kernel/sys_sparc32.c

@@ -211,46 +211,6 @@ asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
 	return sys_sysfs(option, arg1, arg2);
 }
 
-asmlinkage long compat_sys_rt_sigprocmask(int how,
-					  compat_sigset_t __user *set,
-					  compat_sigset_t __user *oset,
-					  compat_size_t sigsetsize)
-{
-	sigset_t s;
-	compat_sigset_t s32;
-	int ret;
-	mm_segment_t old_fs = get_fs();
-
-	if (set) {
-		if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
-			return -EFAULT;
-		switch (_NSIG_WORDS) {
-		case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
-		case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
-		case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
-		case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
-		}
-	}
-	set_fs (KERNEL_DS);
-	ret = sys_rt_sigprocmask(how,
-				 set ? (sigset_t __user *) &s : NULL,
-				 oset ? (sigset_t __user *) &s : NULL,
-				 sigsetsize);
-	set_fs (old_fs);
-	if (ret) return ret;
-	if (oset) {
-		switch (_NSIG_WORDS) {
-		case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
-		case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
-		case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
-		case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
-		}
-		if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
-			return -EFAULT;
-	}
-	return 0;
-}
-
 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
 				    compat_size_t sigsetsize)
 {