Setup_frame is now returning a success value.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/process.c

@@ -62,9 +62,9 @@ extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
 /*
  * Native o32 and N64 ABI without DSP ASE
  */
-extern void setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
+extern int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
         int signr, sigset_t *set);
-extern void setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
+extern int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
         int signr, sigset_t *set, siginfo_t *info);
 
 struct mips_abi mips_abi = {
@@ -79,9 +79,9 @@ struct mips_abi mips_abi = {
 /*
  * o32 compatibility on 64-bit kernels, without DSP ASE
  */
-extern void setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
+extern int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
         int signr, sigset_t *set);
-extern void setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
+extern int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
         int signr, sigset_t *set, siginfo_t *info);
 
 struct mips_abi mips_abi_32 = {
@@ -95,7 +95,7 @@ struct mips_abi mips_abi_32 = {
 /*
  * N32 on 64-bit kernels, without DSP ASE
  */
-extern void setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs,
+extern int setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs,
         int signr, sigset_t *set, siginfo_t *info);
 
 struct mips_abi mips_abi_n32 = {

arch/mips/kernel/signal.c

@@ -278,7 +278,7 @@ _sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
 }
 
 #ifdef CONFIG_TRAD_SIGNALS
-void setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
+int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
 	int signr, sigset_t *set)
 {
 	struct sigframe *frame;
@@ -317,14 +317,15 @@ void setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, frame->regs[31]);
 #endif
-        return;
+        return 1;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
+	return 0;
 }
 #endif
 
-void setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
+int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
 	int signr, sigset_t *set, siginfo_t *info)
 {
 	struct rt_sigframe *frame;
@@ -376,18 +377,21 @@ void setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 #endif
-	return;
+	return 1;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
+	return 0;
 }
 
 extern void setup_rt_frame_n32(struct k_sigaction * ka,
 	struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info);
 
-static inline void handle_signal(unsigned long sig, siginfo_t *info,
+static inline int handle_signal(unsigned long sig, siginfo_t *info,
 	struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs)
 {
+	int ret;
+
 	switch(regs->regs[0]) {
 	case ERESTART_RESTARTBLOCK:
 	case ERESTARTNOHAND:
@@ -407,9 +411,9 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info,
 	regs->regs[0] = 0;		/* Don't deal with this again.  */
 
 	if (sig_uses_siginfo(ka))
-		current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info);
+		ret = current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info);
 	else
-		current->thread.abi->setup_frame(ka, regs, sig, oldset);
+		ret = current->thread.abi->setup_frame(ka, regs, sig, oldset);
 
 	spin_lock_irq(&current->sighand->siglock);
 	sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
@@ -417,6 +421,8 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info,
 		sigaddset(&current->blocked,sig);
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
+
+	return ret;
 }
 
 int do_signal(sigset_t *oldset, struct pt_regs *regs)
@@ -440,10 +446,8 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
 		oldset = &current->blocked;
 
 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-	if (signr > 0) {
-		handle_signal(signr, &info, &ka, oldset, regs);
-		return 1;
-	}
+	if (signr > 0)
+		return handle_signal(signr, &info, &ka, oldset, regs);
 
 no_signal:
 	/*

arch/mips/kernel/signal32.c

@@ -769,9 +769,11 @@ void setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr,
 	force_sigsegv(signr, current);
 }
 
-static inline void handle_signal(unsigned long sig, siginfo_t *info,
+static inline int handle_signal(unsigned long sig, siginfo_t *info,
 	struct k_sigaction *ka, sigset_t *oldset, struct pt_regs * regs)
 {
+	int ret;
+
 	switch (regs->regs[0]) {
 	case ERESTART_RESTARTBLOCK:
 	case ERESTARTNOHAND:
@@ -791,9 +793,9 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info,
 	regs->regs[0] = 0;		/* Don't deal with this again.  */
 
 	if (ka->sa.sa_flags & SA_SIGINFO)
-		current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info);
+		ret = current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info);
 	else
-		current->thread.abi->setup_frame(ka, regs, sig, oldset);
+		ret = current->thread.abi->setup_frame(ka, regs, sig, oldset);
 
 	spin_lock_irq(&current->sighand->siglock);
 	sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
@@ -801,6 +803,8 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info,
 		sigaddset(&current->blocked,sig);
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
+
+	return ret;
 }
 
 int do_signal32(sigset_t *oldset, struct pt_regs *regs)
@@ -824,10 +828,8 @@ int do_signal32(sigset_t *oldset, struct pt_regs *regs)
 		oldset = &current->blocked;
 
 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-	if (signr > 0) {
-		handle_signal(signr, &info, &ka, oldset, regs);
-		return 1;
-	}
+	if (signr > 0)
+		return handle_signal(signr, &info, &ka, oldset, regs);
 
 no_signal:
 	/*

arch/mips/kernel/signal_n32.c

@@ -130,7 +130,7 @@ _sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
 	force_sig(SIGSEGV, current);
 }
 
-void setup_rt_frame_n32(struct k_sigaction * ka,
+int setup_rt_frame_n32(struct k_sigaction * ka,
 	struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info)
 {
 	struct rt_sigframe_n32 *frame;
@@ -184,8 +184,9 @@ void setup_rt_frame_n32(struct k_sigaction * ka,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 #endif
-	return;
+	return 1;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
+	return 0;
 }