arm64: switch to generic compat rt_sigprocmask()

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

2 files changed, 1 insertions, 33 deletions

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index d9c901dd3fdb..4b99d632329e 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -6,6 +6,7 @@ config ARM64
         select CLONE_BACKWARDS
         select COMMON_CLK
         select GENERIC_CLOCKEVENTS
+        select GENERIC_COMPAT_RT_SIGPROCMASK
         select GENERIC_HARDIRQS_NO_DEPRECATED
         select GENERIC_IOMAP
         select GENERIC_IRQ_PROBE
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
index 54920c5342b2..dcc13bd94fb0 100644
--- a/arch/arm64/kernel/signal32.c
+++ b/arch/arm64/kernel/signal32.c
@@ -693,39 +693,6 @@ int compat_setup_frame(int usig, struct k_sigaction *ka, sigset_t *set,
         return err;
 }
 
-/*
- * RT signals don't have generic compat wrappers.
- * See arch/powerpc/kernel/signal_32.c
- */
-asmlinkage int compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set,
-                                         compat_sigset_t __user *oset,
-                                         compat_size_t sigsetsize)
-{
-        sigset_t s;
-        sigset_t __user *up;
-        int ret;
-        mm_segment_t old_fs = get_fs();
-
-        if (set) {
-                if (get_sigset_t(&s, set))
-                        return -EFAULT;
-        }
-
-        set_fs(KERNEL_DS);
-        /* This is valid because of the set_fs() */
-        up = (sigset_t __user *) &s;
-        ret = sys_rt_sigprocmask(how, set ? up : NULL, oset ? up : NULL,
-                                 sigsetsize);
-        set_fs(old_fs);
-        if (ret)
-                return ret;
-        if (oset) {
-                if (put_sigset_t(oset, &s))
-                        return -EFAULT;
-        }
-        return 0;
-}
-
 asmlinkage int compat_sys_rt_sigpending(compat_sigset_t __user *set,
                                         compat_size_t sigsetsize)
 {