Merge commit 'v2.6.35-rc3' into perf/core

Merge reason: Go from -rc1 base to -rc3 base, merge in fixes.

7 files changed, 56 insertions, 31 deletions

diff --git a/arch/sh/kernel/Makefile b/arch/sh/kernel/Makefile
index 650b92f..e25f3c6 100644
--- a/arch/sh/kernel/Makefile
+++ b/arch/sh/kernel/Makefile
@@ -12,7 +12,7 @@ endif
 CFLAGS_REMOVE_return_address.o = -pg
 
 obj-y	:= clkdev.o debugtraps.o dma-nommu.o dumpstack.o 		\
-	   idle.o io.o io_generic.o irq.o				\
+	   idle.o io.o irq.o						\
 	   irq_$(BITS).o machvec.o nmi_debug.o process.o		\
 	   process_$(BITS).o ptrace_$(BITS).o				\
 	   reboot.o return_address.o					\
@@ -39,6 +39,7 @@ obj-$(CONFIG_DUMP_CODE)		+= disassemble.o
 obj-$(CONFIG_HIBERNATION)	+= swsusp.o
 obj-$(CONFIG_DWARF_UNWINDER)	+= dwarf.o
 obj-$(CONFIG_PERF_EVENTS)	+= perf_event.o perf_callchain.o
+obj-$(CONFIG_HAS_IOPORT)	+= io_generic.o
 
 obj-$(CONFIG_HAVE_HW_BREAKPOINT)		+= hw_breakpoint.o
 obj-$(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST)	+= localtimer.o
diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
index 886d7d8..49c09c7 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -49,6 +49,8 @@ static DEFINE_SPINLOCK(dwarf_fde_lock);
 
 static struct dwarf_cie *cached_cie;
 
+static unsigned int dwarf_unwinder_ready;
+
 /**
  *	dwarf_frame_alloc_reg - allocate memory for a DWARF register
  *	@frame: the DWARF frame whose list of registers we insert on
@@ -582,6 +584,13 @@ struct dwarf_frame *dwarf_unwind_stack(unsigned long pc,
 	unsigned long addr;
 
 	/*
+	 * If we've been called in to before initialization has
+	 * completed, bail out immediately.
+	 */
+	if (!dwarf_unwinder_ready)
+		return NULL;
+
+	/*
 	 * If we're starting at the top of the stack we need get the
 	 * contents of a physical register to get the CFA in order to
 	 * begin the virtual unwinding of the stack.
@@ -1167,7 +1176,7 @@ void module_dwarf_cleanup(struct module *mod)
  */
 static int __init dwarf_unwinder_init(void)
 {
-	int err;
+	int err = -ENOMEM;
 
 	dwarf_frame_cachep = kmem_cache_create("dwarf_frames",
 			sizeof(struct dwarf_frame), 0,
@@ -1181,11 +1190,15 @@ static int __init dwarf_unwinder_init(void)
 					  mempool_alloc_slab,
 					  mempool_free_slab,
 					  dwarf_frame_cachep);
+	if (!dwarf_frame_pool)
+		goto out;
 
 	dwarf_reg_pool = mempool_create(DWARF_REG_MIN_REQ,
 					 mempool_alloc_slab,
 					 mempool_free_slab,
 					 dwarf_reg_cachep);
+	if (!dwarf_reg_pool)
+		goto out;
 
 	err = dwarf_parse_section(__start_eh_frame, __stop_eh_frame, NULL);
 	if (err)
@@ -1195,11 +1208,13 @@ static int __init dwarf_unwinder_init(void)
 	if (err)
 		goto out;
 
+	dwarf_unwinder_ready = 1;
+
 	return 0;
 
 out:
 	printk(KERN_ERR "Failed to initialise DWARF unwinder: %d\n", err);
 	dwarf_unwinder_cleanup();
-	return -EINVAL;
+	return err;
 }
 early_initcall(dwarf_unwinder_init);
diff --git a/arch/sh/kernel/io.c b/arch/sh/kernel/io.c
index 4770c24..5c51b79 100644
--- a/arch/sh/kernel/io.c
+++ b/arch/sh/kernel/io.c
@@ -112,25 +112,3 @@ void memset_io(volatile void __iomem *dst, int c, unsigned long count)
         }
 }
 EXPORT_SYMBOL(memset_io);
-
-#ifndef CONFIG_GENERIC_IOMAP
-
-void __iomem *ioport_map(unsigned long port, unsigned int nr)
-{
-	void __iomem *ret;
-
-	ret = __ioport_map_trapped(port, nr);
-	if (ret)
-		return ret;
-
-	return __ioport_map(port, nr);
-}
-EXPORT_SYMBOL(ioport_map);
-
-void ioport_unmap(void __iomem *addr)
-{
-	sh_mv.mv_ioport_unmap(addr);
-}
-EXPORT_SYMBOL(ioport_unmap);
-
-#endif /* CONFIG_GENERIC_IOMAP */
diff --git a/arch/sh/kernel/io_generic.c b/arch/sh/kernel/io_generic.c
index e1e1dbd..447d78f 100644
--- a/arch/sh/kernel/io_generic.c
+++ b/arch/sh/kernel/io_generic.c
@@ -158,3 +158,23 @@ void __iomem *generic_ioport_map(unsigned long addr, unsigned int size)
 void generic_ioport_unmap(void __iomem *addr)
 {
 }
+
+#ifndef CONFIG_GENERIC_IOMAP
+void __iomem *ioport_map(unsigned long port, unsigned int nr)
+{
+	void __iomem *ret;
+
+	ret = __ioport_map_trapped(port, nr);
+	if (ret)
+		return ret;
+
+	return __ioport_map(port, nr);
+}
+EXPORT_SYMBOL(ioport_map);
+
+void ioport_unmap(void __iomem *addr)
+{
+	sh_mv.mv_ioport_unmap(addr);
+}
+EXPORT_SYMBOL(ioport_unmap);
+#endif /* CONFIG_GENERIC_IOMAP */
diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c
index 4a8bb4e..2947d2b 100644
--- a/arch/sh/kernel/io_trapped.c
+++ b/arch/sh/kernel/io_trapped.c
@@ -91,10 +91,14 @@ int register_trapped_io(struct trapped_io *tiop)
 	tiop->magic = IO_TRAPPED_MAGIC;
 	INIT_LIST_HEAD(&tiop->list);
 	spin_lock_irq(&trapped_lock);
+#ifdef CONFIG_HAS_IOPORT
 	if (flags & IORESOURCE_IO)
 		list_add(&tiop->list, &trapped_io);
+#endif
+#ifdef CONFIG_HAS_IOMEM
 	if (flags & IORESOURCE_MEM)
 		list_add(&tiop->list, &trapped_mem);
+#endif
 	spin_unlock_irq(&trapped_lock);
 
 	return 0;
diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c
index 85cfaf9..9f9bb63 100644
--- a/arch/sh/kernel/machvec.c
+++ b/arch/sh/kernel/machvec.c
@@ -118,6 +118,14 @@ void __init sh_mv_setup(void)
 		sh_mv.mv_##elem = generic_##elem; \
 } while (0)
 
+#ifdef CONFIG_HAS_IOPORT
+
+#ifdef P2SEG
+	__set_io_port_base(P2SEG);
+#else
+	__set_io_port_base(0);
+#endif
+
 	mv_set(inb);	mv_set(inw);	mv_set(inl);
 	mv_set(outb);	mv_set(outw);	mv_set(outl);
 
@@ -129,16 +137,13 @@ void __init sh_mv_setup(void)
 
 	mv_set(ioport_map);
 	mv_set(ioport_unmap);
+
+#endif
+
 	mv_set(irq_demux);
 	mv_set(mode_pins);
 	mv_set(mem_init);
 
 	if (!sh_mv.mv_nr_irqs)
 		sh_mv.mv_nr_irqs = NR_IRQS;
-
-#ifdef P2SEG
-	__set_io_port_base(P2SEG);
-#else
-	__set_io_port_base(0);
-#endif
 }
diff --git a/arch/sh/kernel/return_address.c b/arch/sh/kernel/return_address.c
index cbf1dd5..5124aeb 100644
--- a/arch/sh/kernel/return_address.c
+++ b/arch/sh/kernel/return_address.c
@@ -24,6 +24,8 @@ void *return_address(unsigned int depth)
 		struct dwarf_frame *tmp;
 
 		tmp = dwarf_unwind_stack(ra, frame);
+		if (!tmp)
+			return NULL;
 
 		if (frame)
 			dwarf_free_frame(frame);