Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (158 commits)
  commit 4f705ae3e94ffaafe8d35f71ff4d5c499bb06814
  Author: Bjorn Helgaas <bjorn.helgaas@hp.com>
  Date:   Mon Apr 3 17:09:22 2006 -0700
  
      [PATCH] DMI: move dmi_scan.c from arch/i386 to drivers/firmware/
      
      dmi_scan.c is arch-independent and is used by i386, x86_64, and ia64.
      Currently all three arches compile it from arch/i386, which means that ia64
      and x86_64 depend on things in arch/i386 that they wouldn't otherwise care
      about.
      
      This is simply "mv arch/i386/kernel/dmi_scan.c drivers/firmware/" (removing
      trailing whitespace) and the associated Makefile changes.  All three
      architectures already set CONFIG_DMI in their top-level Kconfig files.
      
      Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
      Cc: Andi Kleen <ak@muc.de>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: Andrey Panin <pazke@orbita1.ru>
      Signed-off-by: Andrew Morton <akpm@osdl.org>
  ...

22 files changed, 173 insertions, 37 deletions

diff --git a/arch/i386/kernel/Makefile b/arch/i386/kernel/Makefile
index 5b9ed21216cf..96fb8a020af2 100644
--- a/arch/i386/kernel/Makefile
+++ b/arch/i386/kernel/Makefile
@@ -6,7 +6,7 @@ extra-y := head.o init_task.o vmlinux.lds
 
 obj-y   := process.o semaphore.o signal.o entry.o traps.o irq.o \
                 ptrace.o time.o ioport.o ldt.o setup.o i8259.o sys_i386.o \
-                pci-dma.o i386_ksyms.o i387.o dmi_scan.o bootflag.o \
+                pci-dma.o i386_ksyms.o i387.o bootflag.o \
                 quirks.o i8237.o topology.o alternative.o
 
 obj-y                           += cpu/
diff --git a/arch/ia64/kernel/Makefile b/arch/ia64/kernel/Makefile
index 59e871dae742..09a0dbc17fb6 100644
--- a/arch/ia64/kernel/Makefile
+++ b/arch/ia64/kernel/Makefile
@@ -7,7 +7,7 @@ extra-y	:= head.o init_task.o vmlinux.lds
 obj-y := acpi.o entry.o efi.o efi_stub.o gate-data.o fsys.o ia64_ksyms.o irq.o irq_ia64.o       \
          irq_lsapic.o ivt.o machvec.o pal.o patch.o process.o perfmon.o ptrace.o sal.o          \
          salinfo.o semaphore.o setup.o signal.o sys_ia64.o time.o traps.o unaligned.o \
-         unwind.o mca.o mca_asm.o topology.o dmi_scan.o
+         unwind.o mca.o mca_asm.o topology.o
 
 obj-$(CONFIG_IA64_BRL_EMU)      += brl_emu.o
 obj-$(CONFIG_IA64_GENERIC)      += acpi-ext.o
@@ -30,7 +30,6 @@ obj-$(CONFIG_IA64_MCA_RECOVERY)	+= mca_recovery.o
 obj-$(CONFIG_KPROBES)           += kprobes.o jprobes.o
 obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR)   += uncached.o
 mca_recovery-y                  += mca_drv.o mca_drv_asm.o
-dmi_scan-y                      += ../../i386/kernel/dmi_scan.o
 
 # The gate DSO image is built using a special linker script.
 targets += gate.so gate-syms.o
diff --git a/arch/x86_64/kernel/Makefile b/arch/x86_64/kernel/Makefile
index a098a11e7755..059c88313f4e 100644
--- a/arch/x86_64/kernel/Makefile
+++ b/arch/x86_64/kernel/Makefile
@@ -8,7 +8,7 @@ obj-y	:= process.o signal.o entry.o traps.o irq.o \
                 ptrace.o time.o ioport.o ldt.o setup.o i8259.o sys_x86_64.o \
                 x8664_ksyms.o i387.o syscall.o vsyscall.o \
                 setup64.o bootflag.o e820.o reboot.o quirks.o i8237.o \
-                dmi_scan.o pci-dma.o pci-nommu.o
+                pci-dma.o pci-nommu.o
 
 obj-$(CONFIG_X86_MCE)         += mce.o
 obj-$(CONFIG_X86_MCE_INTEL)     += mce_intel.o
@@ -49,5 +49,3 @@ intel_cacheinfo-y		+= ../../i386/kernel/cpu/intel_cacheinfo.o
 quirks-y                        += ../../i386/kernel/quirks.o
 i8237-y                         += ../../i386/kernel/i8237.o
 msr-$(subst m,y,$(CONFIG_X86_MSR))  += ../../i386/kernel/msr.o
-dmi_scan-y                      += ../../i386/kernel/dmi_scan.o
-
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 48718b7f4fa0..76656acd00d4 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -188,6 +188,11 @@ static ssize_t driver_bind(struct device_driver *drv,
                 up(&dev->sem);
                 if (dev->parent)
                         up(&dev->parent->sem);
+
+                if (err > 0)            /* success */
+                        err = count;
+                else if (err == 0)      /* driver didn't accept device */
+                        err = -ENODEV;
         }
         put_device(dev);
         put_bus(bus);
diff --git a/drivers/base/class.c b/drivers/base/class.c
index df7fdabd0730..0e71dff327cd 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -562,14 +562,13 @@ int class_device_add(struct class_device *class_dev)
         kobject_uevent(&class_dev->kobj, KOBJ_ADD);
 
         /* notify any interfaces this device is now here */
-        if (parent_class) {
-                down(&parent_class->sem);
-                list_add_tail(&class_dev->node, &parent_class->children);
-                list_for_each_entry(class_intf, &parent_class->interfaces, node)
-                        if (class_intf->add)
-                                class_intf->add(class_dev, class_intf);
-                up(&parent_class->sem);
+        down(&parent_class->sem);
+        list_add_tail(&class_dev->node, &parent_class->children);
+        list_for_each_entry(class_intf, &parent_class->interfaces, node) {
+                if (class_intf->add)
+                        class_intf->add(class_dev, class_intf);
         }
+        up(&parent_class->sem);
 
  register_done:
         if (error) {
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 730a9ce0a14a..889c71111239 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -209,7 +209,7 @@ static void __device_release_driver(struct device * dev)
                 sysfs_remove_link(&dev->kobj, "driver");
                 klist_remove(&dev->knode_driver);
 
-                if (dev->bus->remove)
+                if (dev->bus && dev->bus->remove)
                         dev->bus->remove(dev);
                 else if (drv->remove)
                         drv->remove(dev);
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c
index bdb60663f2ef..662209d3f42d 100644
--- a/drivers/base/power/suspend.c
+++ b/drivers/base/power/suspend.c
@@ -10,6 +10,8 @@
 
 #include <linux/vt_kern.h>
 #include <linux/device.h>
+#include <linux/kallsyms.h>
+#include <linux/pm.h>
 #include "../base.h"
 #include "power.h"
 
@@ -58,6 +60,7 @@ int suspend_device(struct device * dev, pm_message_t state)
         if (dev->bus && dev->bus->suspend && !dev->power.power_state.event) {
                 dev_dbg(dev, "suspending\n");
                 error = dev->bus->suspend(dev, state);
+                suspend_report_result(dev->bus->suspend, error);
         }
         up(&dev->sem);
         return error;
@@ -169,3 +172,12 @@ int device_power_down(pm_message_t state)
 
 EXPORT_SYMBOL_GPL(device_power_down);
 
+void __suspend_report_result(const char *function, void *fn, int ret)
+{
+        if (ret) {
+                printk(KERN_ERR "%s(): ", function);
+                print_fn_descriptor_symbol("%s() returns ", (unsigned long)fn);
+                printk("%d\n", ret);
+        }
+}
+EXPORT_SYMBOL_GPL(__suspend_report_result);
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 85429979d0db..98e395f4bb29 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -1,7 +1,8 @@
 #
 # Makefile for the linux kernel.
 #
-obj-$(CONFIG_EDD)               += edd.o
+obj-$(CONFIG_DMI)               += dmi_scan.o
+obj-$(CONFIG_EDD)               += edd.o
 obj-$(CONFIG_EFI_VARS)          += efivars.o
 obj-$(CONFIG_EFI_PCDP)          += pcdp.o
 obj-$(CONFIG_DELL_RBU)          += dell_rbu.o
diff --git a/arch/i386/kernel/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 5efceebc48dc..948bd7e1445a 100644
--- a/arch/i386/kernel/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -27,7 +27,7 @@ static char * __init dmi_string(struct dmi_header *dm, u8 s)
                         else
                                 printk(KERN_ERR "dmi_string: out of memory.\n");
                 }
-        }
+        }
 
         return str;
 }
@@ -41,7 +41,7 @@ static int __init dmi_table(u32 base, int len, int num,
 {
         u8 *buf, *data;
         int i = 0;
-                
+
         buf = dmi_ioremap(base, len);
         if (buf == NULL)
                 return -1;
@@ -49,9 +49,9 @@ static int __init dmi_table(u32 base, int len, int num,
         data = buf;
 
         /*
-         *      Stop when we see all the items the table claimed to have
-         *      OR we run off the end of the table (also happens)
-         */
+         *      Stop when we see all the items the table claimed to have
+         *      OR we run off the end of the table (also happens)
+         */
         while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) {
                 struct dmi_header *dm = (struct dmi_header *)data;
                 /*
@@ -75,7 +75,7 @@ static int __init dmi_checksum(u8 *buf)
 {
         u8 sum = 0;
         int a;
-        
+
         for (a = 0; a < 15; a++)
                 sum += buf[a];
 
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 1ed5152db450..434ca39d19c1 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -163,6 +163,7 @@ void md_new_event(mddev_t *mddev)
 {
         atomic_inc(&md_event_count);
         wake_up(&md_event_waiters);
+        sysfs_notify(&mddev->kobj, NULL, "sync_action");
 }
 EXPORT_SYMBOL_GPL(md_new_event);
 
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index f22f69ac6445..1456759936c5 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -271,10 +271,12 @@ static int pci_device_suspend(struct device * dev, pm_message_t state)
         struct pci_driver * drv = pci_dev->driver;
         int i = 0;
 
-        if (drv && drv->suspend)
+        if (drv && drv->suspend) {
                 i = drv->suspend(pci_dev, state);
-        else
+                suspend_report_result(drv->suspend, i);
+        } else {
                 pci_save_state(pci_dev);
+        }
         return i;
 }
 
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index bea1ad1ad5ba..042fa5265cf6 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -307,9 +307,11 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
          * Can enter D0 from any state, but if we can only go deeper 
          * to sleep if we're already in a low power state
          */
-        if (state != PCI_D0 && dev->current_state > state)
+        if (state != PCI_D0 && dev->current_state > state) {
+                printk(KERN_ERR "%s(): %s: state=%d, current state=%d\n",
+                        __FUNCTION__, pci_name(dev), state, dev->current_state);
                 return -EINVAL;
-        else if (dev->current_state == state) 
+        } else if (dev->current_state == state)
                 return 0;        /* we're already there */
 
         /* find PCI PM capability in list */
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 0d2193b69235..66b78404ab34 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -213,11 +213,9 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message)
 
         if (hcd->driver->suspend) {
                 retval = hcd->driver->suspend(hcd, message);
-                if (retval) {
-                        dev_dbg (&dev->dev, "PCI pre-suspend fail, %d\n",
-                                retval);
+                suspend_report_result(hcd->driver->suspend, retval);
+                if (retval)
                         goto done;
-                }
         }
         synchronize_irq(dev->irq);
 
@@ -263,6 +261,7 @@ int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t message)
                  * some device state (e.g. as part of clock reinit).
                  */
                 retval = pci_set_power_state (dev, PCI_D3hot);
+                suspend_report_result(pci_set_power_state, retval);
                 if (retval == 0) {
                         int wake = device_can_wakeup(&hcd->self.root_hub->dev);
 
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index af0cb4b9e784..f3b6af071722 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -331,7 +331,9 @@ void delete_partition(struct gendisk *disk, int part)
         devfs_remove("%s/part%d", disk->devfs_name, part);
         if (p->holder_dir)
                 kobject_unregister(p->holder_dir);
-        kobject_unregister(&p->kobj);
+        kobject_uevent(&p->kobj, KOBJ_REMOVE);
+        kobject_del(&p->kobj);
+        kobject_put(&p->kobj);
 }
 
 void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len)
@@ -357,7 +359,10 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len)
                 snprintf(p->kobj.name,KOBJ_NAME_LEN,"%s%d",disk->kobj.name,part);
         p->kobj.parent = &disk->kobj;
         p->kobj.ktype = &ktype_part;
-        kobject_register(&p->kobj);
+        kobject_init(&p->kobj);
+        kobject_add(&p->kobj);
+        if (!disk->part_uevent_suppress)
+                kobject_uevent(&p->kobj, KOBJ_ADD);
         partition_sysfs_add_subdir(p);
         disk->part[part-1] = p;
 }
@@ -395,6 +400,8 @@ void register_disk(struct gendisk *disk)
 {
         struct block_device *bdev;
         char *s;
+        int i;
+        struct hd_struct *p;
         int err;
 
         strlcpy(disk->kobj.name,disk->disk_name,KOBJ_NAME_LEN);
@@ -406,13 +413,12 @@ void register_disk(struct gendisk *disk)
                 return;
         disk_sysfs_symlinks(disk);
         disk_sysfs_add_subdirs(disk);
-        kobject_uevent(&disk->kobj, KOBJ_ADD);
 
         /* No minors to use for partitions */
         if (disk->minors == 1) {
                 if (disk->devfs_name[0] != '\0')
                         devfs_add_disk(disk);
-                return;
+                goto exit;
         }
 
         /* always add handle for the whole disk */
@@ -420,16 +426,32 @@ void register_disk(struct gendisk *disk)
 
         /* No such device (e.g., media were just removed) */
         if (!get_capacity(disk))
-                return;
+                goto exit;
 
         bdev = bdget_disk(disk, 0);
         if (!bdev)
-                return;
+                goto exit;
 
+        /* scan partition table, but suppress uevents */
         bdev->bd_invalidated = 1;
-        if (blkdev_get(bdev, FMODE_READ, 0) < 0)
-                return;
+        disk->part_uevent_suppress = 1;
+        err = blkdev_get(bdev, FMODE_READ, 0);
+        disk->part_uevent_suppress = 0;
+        if (err < 0)
+                goto exit;
         blkdev_put(bdev);
+
+exit:
+        /* announce disk after possible partitions are already created */
+        kobject_uevent(&disk->kobj, KOBJ_ADD);
+
+        /* announce possible partitions */
+        for (i = 1; i < disk->minors; i++) {
+                p = disk->part[i-1];
+                if (!p || !p->nr_sects)
+                        continue;
+                kobject_uevent(&p->kobj, KOBJ_ADD);
+        }
 }
 
 int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 6cfdc9a87772..610b5bdbe75b 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -43,6 +43,7 @@ static struct sysfs_dirent * sysfs_new_dirent(struct sysfs_dirent * parent_sd,
 
         memset(sd, 0, sizeof(*sd));
         atomic_set(&sd->s_count, 1);
+        atomic_set(&sd->s_event, 0);
         INIT_LIST_HEAD(&sd->s_children);
         list_add(&sd->s_sibling, &parent_sd->s_children);
         sd->s_element = element;
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index f1cb1ddde511..cf3786625bfa 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -6,6 +6,7 @@
 #include <linux/fsnotify.h>
 #include <linux/kobject.h>
 #include <linux/namei.h>
+#include <linux/poll.h>
 #include <asm/uaccess.h>
 #include <asm/semaphore.h>
 
@@ -57,6 +58,7 @@ struct sysfs_buffer {
         struct sysfs_ops        * ops;
         struct semaphore        sem;
         int                     needs_read_fill;
+        int                     event;
 };
 
 
@@ -72,6 +74,7 @@ struct sysfs_buffer {
  */
 static int fill_read_buffer(struct dentry * dentry, struct sysfs_buffer * buffer)
 {
+        struct sysfs_dirent * sd = dentry->d_fsdata;
         struct attribute * attr = to_attr(dentry);
         struct kobject * kobj = to_kobj(dentry->d_parent);
         struct sysfs_ops * ops = buffer->ops;
@@ -83,6 +86,7 @@ static int fill_read_buffer(struct dentry * dentry, struct sysfs_buffer * buffer
         if (!buffer->page)
                 return -ENOMEM;
 
+        buffer->event = atomic_read(&sd->s_event);
         count = ops->show(kobj,attr,buffer->page);
         buffer->needs_read_fill = 0;
         BUG_ON(count > (ssize_t)PAGE_SIZE);
@@ -348,12 +352,84 @@ static int sysfs_release(struct inode * inode, struct file * filp)
         return 0;
 }
 
+/* Sysfs attribute files are pollable.  The idea is that you read
+ * the content and then you use 'poll' or 'select' to wait for
+ * the content to change.  When the content changes (assuming the
+ * manager for the kobject supports notification), poll will
+ * return POLLERR|POLLPRI, and select will return the fd whether
+ * it is waiting for read, write, or exceptions.
+ * Once poll/select indicates that the value has changed, you
+ * need to close and re-open the file, as simply seeking and reading
+ * again will not get new data, or reset the state of 'poll'.
+ * Reminder: this only works for attributes which actively support
+ * it, and it is not possible to test an attribute from userspace
+ * to see if it supports poll (Nether 'poll' or 'select' return
+ * an appropriate error code).  When in doubt, set a suitable timeout value.
+ */
+static unsigned int sysfs_poll(struct file *filp, poll_table *wait)
+{
+        struct sysfs_buffer * buffer = filp->private_data;
+        struct kobject * kobj = to_kobj(filp->f_dentry->d_parent);
+        struct sysfs_dirent * sd = filp->f_dentry->d_fsdata;
+        int res = 0;
+
+        poll_wait(filp, &kobj->poll, wait);
+
+        if (buffer->event != atomic_read(&sd->s_event)) {
+                res = POLLERR|POLLPRI;
+                buffer->needs_read_fill = 1;
+        }
+
+        return res;
+}
+
+
+static struct dentry *step_down(struct dentry *dir, const char * name)
+{
+        struct dentry * de;
+
+        if (dir == NULL || dir->d_inode == NULL)
+                return NULL;
+
+        mutex_lock(&dir->d_inode->i_mutex);
+        de = lookup_one_len(name, dir, strlen(name));
+        mutex_unlock(&dir->d_inode->i_mutex);
+        dput(dir);
+        if (IS_ERR(de))
+                return NULL;
+        if (de->d_inode == NULL) {
+                dput(de);
+                return NULL;
+        }
+        return de;
+}
+
+void sysfs_notify(struct kobject * k, char *dir, char *attr)
+{
+        struct dentry *de = k->dentry;
+        if (de)
+                dget(de);
+        if (de && dir)
+                de = step_down(de, dir);
+        if (de && attr)
+                de = step_down(de, attr);
+        if (de) {
+                struct sysfs_dirent * sd = de->d_fsdata;
+                if (sd)
+                        atomic_inc(&sd->s_event);
+                wake_up_interruptible(&k->poll);
+                dput(de);
+        }
+}
+EXPORT_SYMBOL_GPL(sysfs_notify);
+
 const struct file_operations sysfs_file_operations = {
         .read           = sysfs_read_file,
         .write          = sysfs_write_file,
         .llseek         = generic_file_llseek,
         .open           = sysfs_open_file,
         .release        = sysfs_release,
+        .poll           = sysfs_poll,
 };
 
 
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 32958a7c50e9..3651ffb5ec09 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -11,6 +11,7 @@ extern int sysfs_make_dirent(struct sysfs_dirent *, struct dentry *, void *,
 
 extern int sysfs_add_file(struct dentry *, const struct attribute *, int);
 extern void sysfs_hash_and_remove(struct dentry * dir, const char * name);
+extern struct sysfs_dirent *sysfs_find(struct sysfs_dirent *dir, const char * name);
 
 extern int sysfs_create_subdir(struct kobject *, const char *, struct dentry **);
 extern void sysfs_remove_subdir(struct dentry *);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 10a27f29d692..2ef845b35175 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -105,6 +105,7 @@ struct gendisk {
                                          * disks that can't be partitioned. */
         char disk_name[32];             /* name of major driver */
         struct hd_struct **part;        /* [indexed by minor] */
+        int part_uevent_suppress;
         struct block_device_operations *fops;
         struct request_queue *queue;
         void *private_data;
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 4cb1214ec290..dcd0623be892 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -24,6 +24,7 @@
 #include <linux/rwsem.h>
 #include <linux/kref.h>
 #include <linux/kernel.h>
+#include <linux/wait.h>
 #include <asm/atomic.h>
 
 #define KOBJ_NAME_LEN                   20
@@ -56,6 +57,7 @@ struct kobject {
         struct kset             * kset;
         struct kobj_type        * ktype;
         struct dentry           * dentry;
+        wait_queue_head_t       poll;
 };
 
 extern int kobject_set_name(struct kobject *, const char *, ...)
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 6df2585c0169..66be58902b17 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -199,6 +199,12 @@ extern int device_suspend(pm_message_t state);
 
 extern int dpm_runtime_suspend(struct device *, pm_message_t);
 extern void dpm_runtime_resume(struct device *);
+extern void __suspend_report_result(const char *function, void *fn, int ret);
+
+#define suspend_report_result(fn, ret)                                  \
+        do {                                                            \
+                __suspend_report_result(__FUNCTION__, fn, ret);         \
+        } while (0)
 
 #else /* !CONFIG_PM */
 
@@ -219,6 +225,8 @@ static inline void dpm_runtime_resume(struct device * dev)
 {
 }
 
+#define suspend_report_result(fn, ret) do { } while (0)
+
 #endif
 
 /* changes to device_may_wakeup take effect on the next pm state change.
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 392da5a6dacb..1ea5d3cda6ae 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -74,6 +74,7 @@ struct sysfs_dirent {
         umode_t                 s_mode;
         struct dentry           * s_dentry;
         struct iattr            * s_iattr;
+        atomic_t                s_event;
 };
 
 #define SYSFS_ROOT              0x0001
@@ -117,6 +118,7 @@ int sysfs_remove_bin_file(struct kobject * kobj, struct bin_attribute * attr);
 
 int sysfs_create_group(struct kobject *, const struct attribute_group *);
 void sysfs_remove_group(struct kobject *, const struct attribute_group *);
+void sysfs_notify(struct kobject * k, char *dir, char *attr);
 
 #else /* CONFIG_SYSFS */
 
@@ -185,6 +187,10 @@ static inline void sysfs_remove_group(struct kobject * k, const struct attribute
         ;
 }
 
+static inline void sysfs_notify(struct kobject * k, char *dir, char *attr)
+{
+}
+
 #endif /* CONFIG_SYSFS */
 
 #endif /* _SYSFS_H_ */
diff --git a/lib/kobject.c b/lib/kobject.c
index 25204a41a9b0..01d957513940 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -128,6 +128,7 @@ void kobject_init(struct kobject * kobj)
 {
         kref_init(&kobj->kref);
         INIT_LIST_HEAD(&kobj->entry);
+        init_waitqueue_head(&kobj->poll);
         kobj->kset = kset_get(kobj->kset);
 }