signal/powerpc: Use force_sig_fault where appropriate

Reviewed-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

arch/powerpc/kernel/process.c

@@ -620,8 +620,6 @@ void do_send_trap(struct pt_regs *regs, unsigned long address,
 void do_break (struct pt_regs *regs, unsigned long address,
 		    unsigned long error_code)
 {
-	siginfo_t info;
-
 	current->thread.trap_nr = TRAP_HWBKPT;
 	if (notify_die(DIE_DABR_MATCH, "dabr_match", regs, error_code,
 			11, SIGSEGV) == NOTIFY_STOP)
@@ -634,12 +632,7 @@ void do_break (struct pt_regs *regs, unsigned long address,
 	hw_breakpoint_disable();
 
 	/* Deliver the signal to userspace */
-	clear_siginfo(&info);
-	info.si_signo = SIGTRAP;
-	info.si_errno = 0;
-	info.si_code = TRAP_HWBKPT;
-	info.si_addr = (void __user *)address;
-	force_sig_info(SIGTRAP, &info, current);
+	force_sig_fault(SIGTRAP, TRAP_HWBKPT, (void __user *)address, current);
 }
 #endif	/* CONFIG_PPC_ADV_DEBUG_REGS */
 

arch/powerpc/mm/fault.c

@@ -165,17 +165,10 @@ static noinline int bad_access(struct pt_regs *regs, unsigned long address)
 static int do_sigbus(struct pt_regs *regs, unsigned long address,
 		     vm_fault_t fault)
 {
-	siginfo_t info;
-
 	if (!user_mode(regs))
 		return SIGBUS;
 
 	current->thread.trap_nr = BUS_ADRERR;
-	clear_siginfo(&info);
-	info.si_signo = SIGBUS;
-	info.si_errno = 0;
-	info.si_code = BUS_ADRERR;
-	info.si_addr = (void __user *)address;
 #ifdef CONFIG_MEMORY_FAILURE
 	if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) {
 		unsigned int lsb = 0; /* shutup gcc */
@@ -194,7 +187,7 @@ static int do_sigbus(struct pt_regs *regs, unsigned long address,
 	}
 
 #endif
-	force_sig_info(SIGBUS, &info, current);
+	force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);
 	return 0;
 }
 

arch/powerpc/platforms/cell/spu_base.c

@@ -50,11 +50,11 @@ struct cbe_spu_info cbe_spu_info[MAX_NUMNODES];
 EXPORT_SYMBOL_GPL(cbe_spu_info);
 
 /*
- * The spufs fault-handling code needs to call force_sig_info to raise signals
+ * The spufs fault-handling code needs to call force_sig_fault to raise signals
  * on DMA errors. Export it here to avoid general kernel-wide access to this
  * function
  */
-EXPORT_SYMBOL_GPL(force_sig_info);
+EXPORT_SYMBOL_GPL(force_sig_fault);
 
 /*
  * Protects cbe_spu_info and spu->number.

arch/powerpc/platforms/cell/spufs/fault.c

@@ -36,42 +36,32 @@
 static void spufs_handle_event(struct spu_context *ctx,
 				unsigned long ea, int type)
 {
-	siginfo_t info;
-
 	if (ctx->flags & SPU_CREATE_EVENTS_ENABLED) {
 		ctx->event_return |= type;
 		wake_up_all(&ctx->stop_wq);
 		return;
 	}
 
-	clear_siginfo(&info);
-
 	switch (type) {
 	case SPE_EVENT_INVALID_DMA:
-		info.si_signo = SIGBUS;
-		info.si_code = BUS_OBJERR;
+		force_sig_fault(SIGBUS, BUS_OBJERR, NULL, current);
 		break;
 	case SPE_EVENT_SPE_DATA_STORAGE:
-		info.si_signo = SIGSEGV;
-		info.si_addr = (void __user *)ea;
-		info.si_code = SEGV_ACCERR;
 		ctx->ops->restart_dma(ctx);
+		force_sig_fault(SIGSEGV, SEGV_ACCERR, (void __user *)ea,
+				current);
 		break;
 	case SPE_EVENT_DMA_ALIGNMENT:
-		info.si_signo = SIGBUS;
 		/* DAR isn't set for an alignment fault :( */
-		info.si_code = BUS_ADRALN;
+		force_sig_fault(SIGBUS, BUS_ADRALN, NULL, current);
 		break;
 	case SPE_EVENT_SPE_ERROR:
-		info.si_signo = SIGILL;
-		info.si_addr = (void __user *)(unsigned long)
-			ctx->ops->npc_read(ctx) - 4;
-		info.si_code = ILL_ILLOPC;
+		force_sig_fault(
+			SIGILL, ILL_ILLOPC,
+			(void __user *)(unsigned long)
+			ctx->ops->npc_read(ctx) - 4, current);
 		break;
 	}
-
-	if (info.si_signo)
-		force_sig_info(info.si_signo, &info, current);
 }
 
 int spufs_handle_class0(struct spu_context *ctx)