Driver core: Call device_pm_add() after bus_add_device() in device_add()

[linux-2.6-omap-h63xx.git] / drivers / base / core.c

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 9c0070b5bd3e75d828a44d405dca4695b70e6ef6..adbc01788447c899b9f105ccd8aa67c01554b789 100644 (file)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -19,6 +19,7 @@
 #include <linux/kdev_t.h>
 #include <linux/notifier.h>
 #include <linux/genhd.h>
+#include <linux/kallsyms.h>
 #include <asm/semaphore.h>
 
 #include "base.h"
@@ -68,6 +69,10 @@ static ssize_t dev_attr_show(struct kobject *kobj, struct attribute *attr,
 
        if (dev_attr->show)
                ret = dev_attr->show(dev, dev_attr, buf);
+       if (ret >= (ssize_t)PAGE_SIZE) {
+               print_symbol("dev_attr_show: %s returned bad count\n",
+                               (unsigned long)dev_attr->show);
+       }
        return ret;
 }
 
@@ -621,7 +626,8 @@ static struct kobject *get_device_parent(struct device *dev,
 static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir)
 {
        /* see if we live in a "glue" directory */
-       if (!dev->class || glue_dir->kset != &dev->class->class_dirs)
+       if (!glue_dir || !dev->class ||
+           glue_dir->kset != &dev->class->class_dirs)
                return;
 
        kobject_put(glue_dir);
@@ -770,17 +776,10 @@ int device_add(struct device *dev)
        struct class_interface *class_intf;
        int error;
 
-       error = pm_sleep_lock();
-       if (error) {
-               dev_warn(dev, "Suspicious %s during suspend\n", __FUNCTION__);
-               dump_stack();
-               return error;
-       }
-
        dev = get_device(dev);
        if (!dev || !strlen(dev->bus_id)) {
                error = -EINVAL;
-               goto Error;
+               goto Done;
        }
 
        pr_debug("device: '%s': %s\n", dev->bus_id, __FUNCTION__);
@@ -818,13 +817,12 @@ int device_add(struct device *dev)
        error = device_add_attrs(dev);
        if (error)
                goto AttrsError;
-       error = dpm_sysfs_add(dev);
-       if (error)
-               goto PMError;
-       device_pm_add(dev);
        error = bus_add_device(dev);
        if (error)
                goto BusError;
+       error = device_pm_add(dev);
+       if (error)
+               goto PMError;
        kobject_uevent(&dev->kobj, KOBJ_ADD);
        bus_attach_device(dev);
        if (parent)
@@ -843,12 +841,10 @@ int device_add(struct device *dev)
        }
  Done:
        put_device(dev);
-       pm_sleep_unlock();
        return error;
- BusError:
-       device_pm_remove(dev);
-       dpm_sysfs_remove(dev);
  PMError:
+       bus_remove_device(dev);
+ BusError:
        if (dev->bus)
                blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
                                             BUS_NOTIFY_DEL_DEVICE, dev);