Merge commit 'v2.6.30-rc5' into core/iommu

Merge reason: core/iommu was on an .30-rc1 base,
              update it to .30-rc5 to refresh.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

8 files changed, 18 insertions, 79 deletions

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c6e854f215fa..812c28207baf 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -440,7 +440,7 @@ config LOCKDEP
         bool
         depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
         select STACKTRACE
-        select FRAME_POINTER if !X86 && !MIPS && !PPC && !ARM_UNWIND
+        select FRAME_POINTER if !X86 && !MIPS && !PPC && !ARM_UNWIND && !S390
         select KALLSYMS
         select KALLSYMS_ALL
 
@@ -620,7 +620,7 @@ config ARCH_WANT_FRAME_POINTERS
 config FRAME_POINTER
         bool "Compile the kernel with frame pointers"
         depends on DEBUG_KERNEL && \
-                (CRIS || M68K || M68KNOMMU || FRV || UML || S390 || \
+                (CRIS || M68K || M68KNOMMU || FRV || UML || \
                  AVR32 || SUPERH || BLACKFIN || MN10300) || \
                 ARCH_WANT_FRAME_POINTERS
         default y if (DEBUG_INFO && UML) || ARCH_WANT_FRAME_POINTERS
@@ -809,13 +809,13 @@ config FAULT_INJECTION_STACKTRACE_FILTER
         depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
         depends on !X86_64
         select STACKTRACE
-        select FRAME_POINTER if !PPC
+        select FRAME_POINTER if !PPC && !S390
         help
           Provide stacktrace filter for fault-injection capabilities
 
 config LATENCYTOP
         bool "Latency measuring infrastructure"
-        select FRAME_POINTER if !MIPS && !PPC
+        select FRAME_POINTER if !MIPS && !PPC && !S390
         select KALLSYMS
         select KALLSYMS_ALL
         select STACKTRACE
diff --git a/lib/Makefile b/lib/Makefile
index d6edd6753f40..33a40e40e3ee 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -38,7 +38,7 @@ lib-$(CONFIG_RWSEM_GENERIC_SPINLOCK) += rwsem-spinlock.o
 lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o
 lib-$(CONFIG_GENERIC_FIND_FIRST_BIT) += find_next_bit.o
 lib-$(CONFIG_GENERIC_FIND_NEXT_BIT) += find_next_bit.o
-lib-$(CONFIG_GENERIC_FIND_LAST_BIT) += find_last_bit.o
+obj-$(CONFIG_GENERIC_FIND_LAST_BIT) += find_last_bit.o
 obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
 obj-$(CONFIG_LOCK_KERNEL) += kernel_lock.o
 obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
diff --git a/lib/debug_locks.c b/lib/debug_locks.c
index 0218b4693dd8..bc3b11731b9c 100644
--- a/lib/debug_locks.c
+++ b/lib/debug_locks.c
@@ -36,7 +36,7 @@ int debug_locks_silent;
  */
 int debug_locks_off(void)
 {
-        if (xchg(&debug_locks, 0)) {
+        if (__debug_locks_off()) {
                 if (!debug_locks_silent) {
                         oops_in_progress = 1;
                         console_verbose();
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 5d61019330cd..cdd205d6bf7c 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -458,60 +458,9 @@ out_err:
         return -ENOMEM;
 }
 
-static int device_dma_allocations(struct device *dev)
-{
-        struct dma_debug_entry *entry;
-        unsigned long flags;
-        int count = 0, i;
-
-        for (i = 0; i < HASH_SIZE; ++i) {
-                spin_lock_irqsave(&dma_entry_hash[i].lock, flags);
-                list_for_each_entry(entry, &dma_entry_hash[i].list, list) {
-                        if (entry->dev == dev)
-                                count += 1;
-                }
-                spin_unlock_irqrestore(&dma_entry_hash[i].lock, flags);
-        }
-
-        return count;
-}
-
-static int dma_debug_device_change(struct notifier_block *nb,
-                                    unsigned long action, void *data)
-{
-        struct device *dev = data;
-        int count;
-
-
-        switch (action) {
-        case BUS_NOTIFY_UNBIND_DRIVER:
-                count = device_dma_allocations(dev);
-                if (count == 0)
-                        break;
-                err_printk(dev, NULL, "DMA-API: device driver has pending "
-                                "DMA allocations while released from device "
-                                "[count=%d]\n", count);
-                break;
-        default:
-                break;
-        }
-
-        return 0;
-}
-
 void dma_debug_add_bus(struct bus_type *bus)
 {
-        struct notifier_block *nb;
-
-        nb = kzalloc(sizeof(struct notifier_block), GFP_KERNEL);
-        if (nb == NULL) {
-                printk(KERN_ERR "dma_debug_add_bus: out of memory\n");
-                return;
-        }
-
-        nb->notifier_call = dma_debug_device_change;
-
-        bus_register_notifier(bus, nb);
+        /* FIXME: register notifier */
 }
 
 /*
diff --git a/lib/kobject.c b/lib/kobject.c
index a6dec32f2ddd..bacf6fe4f7a0 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -218,6 +218,9 @@ int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
         const char *old_name = kobj->name;
         char *s;
 
+        if (kobj->name && !fmt)
+                return 0;
+
         kobj->name = kvasprintf(GFP_KERNEL, fmt, vargs);
         if (!kobj->name)
                 return -ENOMEM;
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 97a777ad4f59..920a3ca6e259 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -258,7 +258,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
                         goto exit;
 
                 retval = call_usermodehelper(argv[0], argv,
-                                             env->envp, UMH_NO_WAIT);
+                                             env->envp, UMH_WAIT_EXEC);
         }
 
 exit:
@@ -328,7 +328,7 @@ static int __init kobject_uevent_init(void)
                        "kobject_uevent: unable to create netlink socket!\n");
                 return -ENODEV;
         }
-
+        netlink_set_nonroot(NETLINK_KOBJECT_UEVENT, NL_NONROOT_RECV);
         return 0;
 }
 
diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index b7b449dafbe5..a295e404e908 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -347,9 +347,12 @@ bool sg_miter_next(struct sg_mapping_iter *miter)
         sg_miter_stop(miter);
 
         /* get to the next sg if necessary.  __offset is adjusted by stop */
-        if (miter->__offset == miter->__sg->length && --miter->__nents) {
-                miter->__sg = sg_next(miter->__sg);
-                miter->__offset = 0;
+        while (miter->__offset == miter->__sg->length) {
+                if (--miter->__nents) {
+                        miter->__sg = sg_next(miter->__sg);
+                        miter->__offset = 0;
+                } else
+                        return false;
         }
 
         /* map the next page */
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index be3001f912e4..7536acea135b 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1051,13 +1051,6 @@ int vsnprintf(char *buf, size_t size, const char *fmt, va_list args)
                         if (str < end)
                                 *str = '%';
                         ++str;
-                        if (*fmt) {
-                                if (str < end)
-                                        *str = *fmt;
-                                ++str;
-                        } else {
-                                --fmt;
-                        }
                         break;
 
                 case FORMAT_TYPE_NRCHARS: {
@@ -1339,8 +1332,6 @@ do {									\
                         break;
 
                 case FORMAT_TYPE_INVALID:
-                        if (!*fmt)
-                                --fmt;
                         break;
 
                 case FORMAT_TYPE_NRCHARS: {
@@ -1523,13 +1514,6 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
                         if (str < end)
                                 *str = '%';
                         ++str;
-                        if (*fmt) {
-                                if (str < end)
-                                        *str = *fmt;
-                                ++str;
-                        } else {
-                                --fmt;
-                        }
                         break;
 
                 case FORMAT_TYPE_NRCHARS: