From d74f0f47e2787837598c6ff6f75d44cbc3753689 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 4 Sep 2017 12:14:28 -0400
Subject: [PATCH] parisc: switch to {get,put}_compat_sigset()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/parisc/kernel/signal.c   |  9 +++------
 arch/parisc/kernel/signal32.c | 13 -------------
 arch/parisc/kernel/signal32.h |  2 --
 3 files changed, 3 insertions(+), 21 deletions(-)

diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 26f12f45b4bb..fdd82e87b340 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -92,7 +92,6 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
 	unsigned long usp = (regs->gr[30] & ~(0x01UL));
 	unsigned long sigframe_size = PARISC_RT_SIGFRAME_SIZE;
 #ifdef CONFIG_64BIT
-	compat_sigset_t compat_set;
 	struct compat_rt_sigframe __user * compat_frame;
 	
 	if (is_compat_task())
@@ -113,9 +112,8 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
 	
 	if (is_compat_task()) {
 		DBG(2,"sys_rt_sigreturn: ELF32 process.\n");
-		if (__copy_from_user(&compat_set, &compat_frame->uc.uc_sigmask, sizeof(compat_set)))
+		if (get_compat_sigset(&set, &compat_frame->uc.uc_sigmask))
 			goto give_sigsegv;
-		sigset_32to64(&set,&compat_set);
 	} else
 #endif
 	{
@@ -237,7 +235,6 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs,
 	int err = 0;
 #ifdef CONFIG_64BIT
 	struct compat_rt_sigframe __user * compat_frame;
-	compat_sigset_t compat_set;
 #endif
 	
 	usp = (regs->gr[30] & ~(0x01UL));
@@ -260,8 +257,8 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs,
 		DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &compat_frame->uc.uc_mcontext);
 		err |= setup_sigcontext32(&compat_frame->uc.uc_mcontext, 
 					&compat_frame->regs, regs, in_syscall);
-		sigset_64to32(&compat_set,set);
-		err |= __copy_to_user(&compat_frame->uc.uc_sigmask, &compat_set, sizeof(compat_set));
+		err |= put_compat_sigset(&compat_frame->uc.uc_sigmask, set,
+					 sizeof(compat_sigset_t));
 	} else
 #endif
 	{	
diff --git a/arch/parisc/kernel/signal32.c b/arch/parisc/kernel/signal32.c
index 9e0cb6a577d6..41afa9cd1f55 100644
--- a/arch/parisc/kernel/signal32.c
+++ b/arch/parisc/kernel/signal32.c
@@ -46,19 +46,6 @@
 #define DBG(LEVEL, ...)
 #endif
 
-inline void
-sigset_32to64(sigset_t *s64, compat_sigset_t *s32)
-{
-	s64->sig[0] = s32->sig[0] | ((unsigned long)s32->sig[1] << 32);
-}
-
-inline void
-sigset_64to32(compat_sigset_t *s32, sigset_t *s64)
-{
-	s32->sig[0] = s64->sig[0] & 0xffffffffUL;
-	s32->sig[1] = (s64->sig[0] >> 32) & 0xffffffffUL;
-}
-
 long
 restore_sigcontext32(struct compat_sigcontext __user *sc, struct compat_regfile __user * rf,
 		struct pt_regs *regs)
diff --git a/arch/parisc/kernel/signal32.h b/arch/parisc/kernel/signal32.h
index af51d4ccee42..719e7417732c 100644
--- a/arch/parisc/kernel/signal32.h
+++ b/arch/parisc/kernel/signal32.h
@@ -79,8 +79,6 @@ struct compat_rt_sigframe {
 #define FUNCTIONCALLFRAME32     48
 #define PARISC_RT_SIGFRAME_SIZE32 (((sizeof(struct compat_rt_sigframe) + FUNCTIONCALLFRAME32) + SIGFRAME32) & -SIGFRAME32)
 
-void sigset_32to64(sigset_t *s64, compat_sigset_t *s32);
-void sigset_64to32(compat_sigset_t *s32, sigset_t *s64);
 long restore_sigcontext32(struct compat_sigcontext __user *sc, 
 		struct compat_regfile __user *rf,
 		struct pt_regs *regs);