Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998

This brings LA.UM.8.4.r1-05500-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
60fca75727065 Merge 4.4.226 into android-4.4-p

Conflicts:
	drivers/base/firmware_class.c
	drivers/gpu/drm/msm/msm_gem.c
	drivers/mmc/host/sdhci.c
	drivers/net/wireless/ath/ath10k/core.c
	kernel/trace/blktrace.c
	net/socket.c
	sound/core/rawmidi.c
	sound/usb/mixer.c

Change-Id: Ic8599e865656da72a9405c45f27091ec1ddc168c

1 files changed, 35 insertions, 25 deletions

diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index e56b774e7cf9..7584f292e2fd 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -22,6 +22,7 @@
 
 /* The I2C_RDWR ioctl code is written by Kolja Waschk <waschk@telos.de> */
 
+#include <linux/cdev.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/device.h>
@@ -46,10 +47,11 @@
 struct i2c_dev {
 	struct list_head list;
 	struct i2c_adapter *adap;
-	struct device *dev;
+	struct device dev;
+	struct cdev cdev;
 };
 
-#define I2C_MINORS	256
+#define I2C_MINORS	MINORMASK
 static LIST_HEAD(i2c_dev_list);
 static DEFINE_SPINLOCK(i2c_dev_list_lock);
 
@@ -89,12 +91,14 @@ static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap)
 	return i2c_dev;
 }
 
-static void return_i2c_dev(struct i2c_dev *i2c_dev)
+static void put_i2c_dev(struct i2c_dev *i2c_dev, bool del_cdev)
 {
 	spin_lock(&i2c_dev_list_lock);
 	list_del(&i2c_dev->list);
 	spin_unlock(&i2c_dev_list_lock);
-	kfree(i2c_dev);
+	if (del_cdev)
+		cdev_device_del(&i2c_dev->cdev, &i2c_dev->dev);
+	put_device(&i2c_dev->dev);
 }
 
 static ssize_t name_show(struct device *dev,
@@ -490,13 +494,8 @@ static int i2cdev_open(struct inode *inode, struct file *file)
 	unsigned int minor = iminor(inode);
 	struct i2c_client *client;
 	struct i2c_adapter *adap;
-	struct i2c_dev *i2c_dev;
-
-	i2c_dev = i2c_dev_get_by_minor(minor);
-	if (!i2c_dev)
-		return -ENODEV;
 
-	adap = i2c_get_adapter(i2c_dev->adap->nr);
+	adap = i2c_get_adapter(minor);
 	if (!adap)
 		return -ENODEV;
 
@@ -545,6 +544,14 @@ static const struct file_operations i2cdev_fops = {
 
 static struct class *i2c_dev_class;
 
+static void i2cdev_dev_release(struct device *dev)
+{
+	struct i2c_dev *i2c_dev;
+
+	i2c_dev = container_of(dev, struct i2c_dev, dev);
+	kfree(i2c_dev);
+}
+
 static int i2cdev_attach_adapter(struct device *dev, void *dummy)
 {
 	struct i2c_adapter *adap;
@@ -559,21 +566,25 @@ static int i2cdev_attach_adapter(struct device *dev, void *dummy)
 	if (IS_ERR(i2c_dev))
 		return PTR_ERR(i2c_dev);
 
-	/* register this i2c device with the driver core */
-	i2c_dev->dev = device_create(i2c_dev_class, &adap->dev,
-				     MKDEV(I2C_MAJOR, adap->nr), NULL,
-				     "i2c-%d", adap->nr);
-	if (IS_ERR(i2c_dev->dev)) {
-		res = PTR_ERR(i2c_dev->dev);
-		goto error;
+	cdev_init(&i2c_dev->cdev, &i2cdev_fops);
+	i2c_dev->cdev.owner = THIS_MODULE;
+
+	device_initialize(&i2c_dev->dev);
+	i2c_dev->dev.devt = MKDEV(I2C_MAJOR, adap->nr);
+	i2c_dev->dev.class = i2c_dev_class;
+	i2c_dev->dev.parent = &adap->dev;
+	i2c_dev->dev.release = i2cdev_dev_release;
+	dev_set_name(&i2c_dev->dev, "i2c-%d", adap->nr);
+
+	res = cdev_device_add(&i2c_dev->cdev, &i2c_dev->dev);
+	if (res) {
+		put_i2c_dev(i2c_dev, false);
+		return res;
 	}
 
 	pr_debug("i2c-dev: adapter [%s] registered as minor %d\n",
 		 adap->name, adap->nr);
 	return 0;
-error:
-	return_i2c_dev(i2c_dev);
-	return res;
 }
 
 static int i2cdev_detach_adapter(struct device *dev, void *dummy)
@@ -589,8 +600,7 @@ static int i2cdev_detach_adapter(struct device *dev, void *dummy)
 	if (!i2c_dev) /* attach_adapter must have failed */
 		return 0;
 
-	return_i2c_dev(i2c_dev);
-	device_destroy(i2c_dev_class, MKDEV(I2C_MAJOR, adap->nr));
+	put_i2c_dev(i2c_dev, true);
 
 	pr_debug("i2c-dev: adapter [%s] unregistered\n", adap->name);
 	return 0;
@@ -627,7 +637,7 @@ static int __init i2c_dev_init(void)
 
 	printk(KERN_INFO "i2c /dev entries driver\n");
 
-	res = register_chrdev(I2C_MAJOR, "i2c", &i2cdev_fops);
+	res = register_chrdev_region(MKDEV(I2C_MAJOR, 0), I2C_MINORS, "i2c");
 	if (res)
 		goto out;
 
@@ -651,7 +661,7 @@ static int __init i2c_dev_init(void)
 out_unreg_class:
 	class_destroy(i2c_dev_class);
 out_unreg_chrdev:
-	unregister_chrdev(I2C_MAJOR, "i2c");
+	unregister_chrdev_region(MKDEV(I2C_MAJOR, 0), I2C_MINORS);
 out:
 	printk(KERN_ERR "%s: Driver Initialisation failed\n", __FILE__);
 	return res;
@@ -662,7 +672,7 @@ static void __exit i2c_dev_exit(void)
 	bus_unregister_notifier(&i2c_bus_type, &i2cdev_notifier);
 	i2c_for_each_dev(NULL, i2cdev_detach_adapter);
 	class_destroy(i2c_dev_class);
-	unregister_chrdev(I2C_MAJOR, "i2c");
+	unregister_chrdev_region(MKDEV(I2C_MAJOR, 0), I2C_MINORS);
 }
 
 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "