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 650b92f00ee5..e25f3c69525d 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 886d7d83ace3..49c09c7d5b77 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 4770c241c679..5c51b794ba2a 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 e1e1dbd19557..447d78f666f9 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 4a8bb4eeb8ad..2947d2bd1291 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 85cfaf916fdc..9f9bb63616ad 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 cbf1dd5372b2..5124aeb28c3f 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);