17 files changed, 92 insertions, 18 deletions

diff --git a/drivers/base/attribute_container.c b/drivers/base/attribute_container.c
index b9cda053d3c0..8fc200b2e2c0 100644
--- a/drivers/base/attribute_container.c
+++ b/drivers/base/attribute_container.c
@@ -328,6 +328,7 @@ attribute_container_add_attrs(struct device *classdev)
 		return sysfs_create_group(&classdev->kobj, cont->grp);
 
 	for (i = 0; attrs[i]; i++) {
+		sysfs_attr_init(&attrs[i]->attr);
 		error = device_create_file(classdev, attrs[i]);
 		if (error)
 			return error;
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 71f6af5c8b0b..12eec3f633b1 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/errno.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/string.h>
 #include "base.h"
diff --git a/drivers/base/class.c b/drivers/base/class.c
index 0147f476b8a9..9c6a0d6408e7 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -219,6 +219,8 @@ static void class_create_release(struct class *cls)
  * This is used to create a struct class pointer that can then be used
  * in calls to device_create().
  *
+ * Returns &struct class pointer on success, or ERR_PTR() on error.
+ *
  * Note, the pointer created here is to be destroyed when finished by
  * making a call to class_destroy().
  */
diff --git a/drivers/base/core.c b/drivers/base/core.c
index ef55df34ddd0..b56a0ba31d4a 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1345,6 +1345,8 @@ static void root_device_release(struct device *dev)
  * 'module' symlink which points to the @owner directory
  * in sysfs.
  *
+ * Returns &struct device pointer on success, or ERR_PTR() on error.
+ *
  * Note: You probably want to use root_device_register().
  */
 struct device *__root_device_register(const char *name, struct module *owner)
@@ -1432,6 +1434,8 @@ static void device_create_release(struct device *dev)
  * Any further sysfs files that might be required can be created using this
  * pointer.
  *
+ * Returns &struct device pointer on success, or ERR_PTR() on error.
+ *
  * Note: the struct class passed to this function must have previously
  * been created with a call to class_create().
  */
@@ -1492,6 +1496,8 @@ EXPORT_SYMBOL_GPL(device_create_vargs);
  * Any further sysfs files that might be required can be created using this
  * pointer.
  *
+ * Returns &struct device pointer on success, or ERR_PTR() on error.
+ *
  * Note: the struct class passed to this function must have previously
  * been created with a call to class_create().
  */
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 7036e8e96ab8..f35719aab3c1 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -10,6 +10,7 @@
 #include <linux/topology.h>
 #include <linux/device.h>
 #include <linux/node.h>
+#include <linux/gfp.h>
 
 #include "base.h"
 
@@ -79,24 +80,24 @@ void unregister_cpu(struct cpu *cpu)
 }
 
 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
-static ssize_t cpu_probe_store(struct sys_device *dev,
-				struct sysdev_attribute *attr,
-				const char *buf,
+static ssize_t cpu_probe_store(struct sysdev_class *class,
+			       struct sysdev_class_attribute *attr,
+			       const char *buf,
 			       size_t count)
 {
 	return arch_cpu_probe(buf, count);
 }
 
-static ssize_t cpu_release_store(struct sys_device *dev,
-				struct sysdev_attribute *attr,
-				const char *buf,
+static ssize_t cpu_release_store(struct sysdev_class *class,
+				 struct sysdev_class_attribute *attr,
+				 const char *buf,
 				 size_t count)
 {
 	return arch_cpu_release(buf, count);
 }
 
-static SYSDEV_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
-static SYSDEV_ATTR(release, S_IWUSR, NULL, cpu_release_store);
+static SYSDEV_CLASS_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
+static SYSDEV_CLASS_ATTR(release, S_IWUSR, NULL, cpu_release_store);
 #endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
 
 #else /* ... !CONFIG_HOTPLUG_CPU */
diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index 05dd307e8f02..cf7a0c788052 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -9,6 +9,7 @@
 
 #include <linux/device.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 
 #include "base.h"
 
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index dac478c6e460..057cf11326bf 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -23,6 +23,7 @@
 #include <linux/cred.h>
 #include <linux/sched.h>
 #include <linux/init_task.h>
+#include <linux/slab.h>
 
 static struct vfsmount *dev_mnt;
 
diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c
index 962a3b574f21..d4d8ce53886a 100644
--- a/drivers/base/dma-coherent.c
+++ b/drivers/base/dma-coherent.c
@@ -2,6 +2,7 @@
  * Coherent per-device memory handling.
  * Borrowed from i386
  */
+#include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/dma-mapping.h>
 
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index ca9186f70a69..763d59c1eb65 100644
--- a/drivers/base/dma-mapping.c
+++ b/drivers/base/dma-mapping.c
@@ -8,6 +8,7 @@
  */
 
 #include <linux/dma-mapping.h>
+#include <linux/gfp.h>
 
 /*
  * Managed DMA API
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 90c9fff09ead..b631f7c59453 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/errno.h>
+#include <linux/slab.h>
 #include <linux/string.h>
 #include "base.h"
 
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index d0dc26ad5387..985da11174e7 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -19,6 +19,7 @@
 #include <linux/kthread.h>
 #include <linux/highmem.h>
 #include <linux/firmware.h>
+#include <linux/slab.h>
 
 #define to_dev(obj) container_of(obj, struct device, kobj)
 
@@ -78,6 +79,7 @@ firmware_timeout_show(struct class *class,
 /**
  * firmware_timeout_store - set number of seconds to wait for firmware
  * @class: device class pointer
+ * @attr: device attribute pointer
  * @buf: buffer to scan for timeout value
  * @count: number of bytes in @buf
  *
@@ -442,6 +444,7 @@ static int fw_setup_device(struct firmware *fw, struct device **dev_p,
 	fw_priv = dev_get_drvdata(f_dev);
 
 	fw_priv->fw = fw;
+	sysfs_bin_attr_init(&fw_priv->attr_data);
 	retval = sysfs_create_bin_file(&f_dev->kobj, &fw_priv->attr_data);
 	if (retval) {
 		dev_err(device, "%s: sysfs_create_bin_file failed\n", __func__);
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index db0848e54cc6..4f4aa5897b4c 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -22,6 +22,7 @@
 #include <linux/mm.h>
 #include <linux/mutex.h>
 #include <linux/stat.h>
+#include <linux/slab.h>
 
 #include <asm/atomic.h>
 #include <asm/uaccess.h>
diff --git a/drivers/base/module.c b/drivers/base/module.c
index 103be9cacb05..f32f2f9b7be5 100644
--- a/drivers/base/module.c
+++ b/drivers/base/module.c
@@ -7,6 +7,7 @@
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/errno.h>
+#include <linux/slab.h>
 #include <linux/string.h>
 #include "base.h"
 
diff --git a/drivers/base/node.c b/drivers/base/node.c
index ad43185ec15a..985abd7f49a7 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -15,6 +15,7 @@
 #include <linux/cpu.h>
 #include <linux/device.h>
 #include <linux/swap.h>
+#include <linux/gfp.h>
 
 static struct sysdev_class_attribute *node_state_attrs[];
 
@@ -165,8 +166,11 @@ static ssize_t node_read_distance(struct sys_device * dev,
 	int len = 0;
 	int i;
 
-	/* buf currently PAGE_SIZE, need ~4 chars per node */
-	BUILD_BUG_ON(MAX_NUMNODES*4 > PAGE_SIZE/2);
+	/*
+	 * buf is currently PAGE_SIZE in length and each node needs 4 chars
+	 * at the most (distance + space or newline).
+	 */
+	BUILD_BUG_ON(MAX_NUMNODES * 4 > PAGE_SIZE);
 
 	for_each_online_node(i)
 		len += sprintf(buf + len, "%s%d", i ? " " : "", node_distance(nid, i));
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 1ba9d617d241..4b4b565c835f 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -362,6 +362,8 @@ EXPORT_SYMBOL_GPL(platform_device_unregister);
  * enumeration tasks, they don't fully conform to the Linux driver model.
  * In particular, when such drivers are built as modules, they can't be
  * "hotplugged".
+ *
+ * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
  */
 struct platform_device *platform_device_register_simple(const char *name,
 							int id,
@@ -408,6 +410,8 @@ EXPORT_SYMBOL_GPL(platform_device_register_simple);
  * allocated for the device allows drivers using such devices to be
  * unloaded without waiting for the last reference to the device to be
  * dropped.
+ *
+ * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
  */
 struct platform_device *platform_device_register_data(
 		struct device *parent,
@@ -559,6 +563,8 @@ EXPORT_SYMBOL_GPL(platform_driver_probe);
  *
  * Use this in legacy-style modules that probe hardware directly and
  * register a single platform device and corresponding platform driver.
+ *
+ * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
  */
 struct platform_device * __init_or_module platform_create_bundle(
 			struct platform_driver *driver,
@@ -1052,9 +1058,11 @@ static __initdata LIST_HEAD(early_platform_driver_list);
 static __initdata LIST_HEAD(early_platform_device_list);
 
 /**
- * early_platform_driver_register
+ * early_platform_driver_register - register early platform driver
  * @epdrv: early_platform driver structure
  * @buf: string passed from early_param()
+ *
+ * Helper function for early_platform_init() / early_platform_init_buffer()
  */
 int __init early_platform_driver_register(struct early_platform_driver *epdrv,
 					  char *buf)
@@ -1106,9 +1114,12 @@ int __init early_platform_driver_register(struct early_platform_driver *epdrv,
 }
 
 /**
- * early_platform_add_devices - add a numbers of early platform devices
+ * early_platform_add_devices - adds a number of early platform devices
  * @devs: array of early platform devices to add
  * @num: number of early platform devices in array
+ *
+ * Used by early architecture code to register early platform devices and
+ * their platform data.
  */
 void __init early_platform_add_devices(struct platform_device **devs, int num)
 {
@@ -1128,8 +1139,12 @@ void __init early_platform_add_devices(struct platform_device **devs, int num)
 }
 
 /**
- * early_platform_driver_register_all
+ * early_platform_driver_register_all - register early platform drivers
  * @class_str: string to identify early platform driver class
+ *
+ * Used by architecture code to register all early platform drivers
+ * for a certain class. If omitted then only early platform drivers
+ * with matching kernel command line class parameters will be registered.
  */
 void __init early_platform_driver_register_all(char *class_str)
 {
@@ -1151,7 +1166,7 @@ void __init early_platform_driver_register_all(char *class_str)
 }
 
 /**
- * early_platform_match
+ * early_platform_match - find early platform device matching driver
  * @epdrv: early platform driver structure
  * @id: id to match against
  */
@@ -1169,7 +1184,7 @@ early_platform_match(struct early_platform_driver *epdrv, int id)
 }
 
 /**
- * early_platform_left
+ * early_platform_left - check if early platform driver has matching devices
  * @epdrv: early platform driver structure
  * @id: return true if id or above exists
  */
@@ -1187,7 +1202,7 @@ static  __init int early_platform_left(struct early_platform_driver *epdrv,
 }
 
 /**
- * early_platform_driver_probe_id
+ * early_platform_driver_probe_id - probe drivers matching class_str and id
  * @class_str: string to identify early platform driver class
  * @id: id to match against
  * @nr_probe: number of platform devices to successfully probe before exiting
@@ -1257,10 +1272,14 @@ static int __init early_platform_driver_probe_id(char *class_str,
 }
 
 /**
- * early_platform_driver_probe
+ * early_platform_driver_probe - probe a class of registered drivers
  * @class_str: string to identify early platform driver class
  * @nr_probe: number of platform devices to successfully probe before exiting
  * @user_only: only probe user specified early platform devices
+ *
+ * Used by architecture code to probe registered early platform drivers
+ * within a certain class. For probe to happen a registered early platform
+ * device matching a registered early platform driver is needed.
  */
 int __init early_platform_driver_probe(char *class_str,
 				       int nr_probe,
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index d477f4dc5e51..941fcb87e52a 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -439,8 +439,23 @@ static int device_resume_noirq(struct device *dev, pm_message_t state)
 	if (dev->bus && dev->bus->pm) {
 		pm_dev_dbg(dev, state, "EARLY ");
 		error = pm_noirq_op(dev, dev->bus->pm, state);
+		if (error)
+			goto End;
 	}
 
+	if (dev->type && dev->type->pm) {
+		pm_dev_dbg(dev, state, "EARLY type ");
+		error = pm_noirq_op(dev, dev->type->pm, state);
+		if (error)
+			goto End;
+	}
+
+	if (dev->class && dev->class->pm) {
+		pm_dev_dbg(dev, state, "EARLY class ");
+		error = pm_noirq_op(dev, dev->class->pm, state);
+	}
+
+End:
 	TRACE_RESUME(error);
 	return error;
 }
@@ -735,10 +750,26 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state)
 {
 	int error = 0;
 
+	if (dev->class && dev->class->pm) {
+		pm_dev_dbg(dev, state, "LATE class ");
+		error = pm_noirq_op(dev, dev->class->pm, state);
+		if (error)
+			goto End;
+	}
+
+	if (dev->type && dev->type->pm) {
+		pm_dev_dbg(dev, state, "LATE type ");
+		error = pm_noirq_op(dev, dev->type->pm, state);
+		if (error)
+			goto End;
+	}
+
 	if (dev->bus && dev->bus->pm) {
 		pm_dev_dbg(dev, state, "LATE ");
 		error = pm_noirq_op(dev, dev->bus->pm, state);
 	}
+
+End:
 	return error;
 }
 
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 8980feec5d14..9354dc10a363 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -17,7 +17,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
-#include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/pm.h>
 #include <linux/device.h>