diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 2a4a423d08e0d3..f3d5817c4ef0fa 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -366,3 +366,10 @@ Contact:	Linux ARM Kernel Mailing list <linux-arm-kernel@lists.infradead.org>
 Description:	AArch64 CPU registers
 		'identification' directory exposes the CPU ID registers for
 		 identifying model and revision of the CPU.
+
+What:		/sys/devices/system/cpu/cpu#/cpu_capacity
+Date:		December 2016
+Contact:	Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:	information about CPUs heterogeneity.
+
+		cpu_capacity: capacity of cpu#.
diff --git a/Documentation/kref.txt b/Documentation/kref.txt
index ddf85a5dde0c12..d26a27ca964d49 100644
--- a/Documentation/kref.txt
+++ b/Documentation/kref.txt
@@ -84,6 +84,7 @@ int my_data_handler(void)
 	task = kthread_run(more_data_handling, data, "more_data_handling");
 	if (task == ERR_PTR(-ENOMEM)) {
 		rv = -ENOMEM;
+	        kref_put(&data->refcount, data_release);
 		goto out;
 	}
 
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 6bb60fb6a30b7b..bbecaf9293bed4 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1607,7 +1607,7 @@ int device_private_init(struct device *dev)
  */
 int device_add(struct device *dev)
 {
-	struct device *parent = NULL;
+	struct device *parent;
 	struct kobject *kobj;
 	struct class_interface *class_intf;
 	int error = -EINVAL;
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index efd71cf4fdead7..51b7061ff7c049 100644
--- a/drivers/base/dma-mapping.c
+++ b/drivers/base/dma-mapping.c
@@ -309,14 +309,13 @@ void *dma_common_contiguous_remap(struct page *page, size_t size,
 	int i;
 	struct page **pages;
 	void *ptr;
-	unsigned long pfn;
 
 	pages = kmalloc(sizeof(struct page *) << get_order(size), GFP_KERNEL);
 	if (!pages)
 		return NULL;
 
-	for (i = 0, pfn = page_to_pfn(page); i < (size >> PAGE_SHIFT); i++)
-		pages[i] = pfn_to_page(pfn + i);
+	for (i = 0; i < (size >> PAGE_SHIFT); i++)
+		pages[i] = nth_page(page, i);
 
 	ptr = dma_common_pages_remap(pages, size, vm_flags, prot, caller);
 
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 7dff776e6d1600..9174b0d285824a 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -74,7 +74,7 @@ static const struct file_operations __fops = {				\
 	.release = simple_attr_release,					\
 	.read	 = debugfs_attr_read,					\
 	.write	 = debugfs_attr_write,					\
-	.llseek  = generic_file_llseek,					\
+	.llseek  = no_llseek,						\
 }
 
 #if defined(CONFIG_DEBUG_FS)
diff --git a/include/uapi/linux/eventpoll.h b/include/uapi/linux/eventpoll.h
index 1c3154913a391f..f4d5c998cc2bc0 100644
--- a/include/uapi/linux/eventpoll.h
+++ b/include/uapi/linux/eventpoll.h
@@ -26,8 +26,21 @@
 #define EPOLL_CTL_DEL 2
 #define EPOLL_CTL_MOD 3
 
+/* Epoll event masks */
+#define EPOLLIN		0x00000001
+#define EPOLLPRI	0x00000002
+#define EPOLLOUT	0x00000004
+#define EPOLLERR	0x00000008
+#define EPOLLHUP	0x00000010
+#define EPOLLRDNORM	0x00000040
+#define EPOLLRDBAND	0x00000080
+#define EPOLLWRNORM	0x00000100
+#define EPOLLWRBAND	0x00000200
+#define EPOLLMSG	0x00000400
+#define EPOLLRDHUP	0x00002000
+
 /* Set exclusive wakeup mode for the target file descriptor */
-#define EPOLLEXCLUSIVE (1 << 28)
+#define EPOLLEXCLUSIVE (1U << 28)
 
 /*
  * Request the handling of system wakeup events so as to prevent system suspends
@@ -39,13 +52,13 @@
  *
  * Requires CAP_BLOCK_SUSPEND
  */
-#define EPOLLWAKEUP (1 << 29)
+#define EPOLLWAKEUP (1U << 29)
 
 /* Set the One Shot behaviour for the target file descriptor */
-#define EPOLLONESHOT (1 << 30)
+#define EPOLLONESHOT (1U << 30)
 
 /* Set the Edge Triggered behaviour for the target file descriptor */
-#define EPOLLET (1 << 31)
+#define EPOLLET (1U << 31)
 
 /* 
  * On x86-64 make the 64bit structure have the same alignment as the