Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

[pandora-kernel.git] / drivers / i2c / i2c-dev.c

diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index d34c14c..86727fa 100644 (file)
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -34,6 +34,7 @@
 #include <linux/list.h>
 #include <linux/i2c.h>
 #include <linux/i2c-dev.h>
+#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 
 static struct i2c_driver i2cdev_driver;
@@ -366,8 +367,7 @@ static noinline int i2cdev_ioctl_smbus(struct i2c_client *client,
        return res;
 }
 
-static int i2cdev_ioctl(struct inode *inode, struct file *file,
-               unsigned int cmd, unsigned long arg)
+static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
        struct i2c_client *client = (struct i2c_client *)file->private_data;
        unsigned long funcs;
@@ -441,14 +441,20 @@ static int i2cdev_open(struct inode *inode, struct file *file)
        struct i2c_client *client;
        struct i2c_adapter *adap;
        struct i2c_dev *i2c_dev;
+       int ret = 0;
 
+       lock_kernel();
        i2c_dev = i2c_dev_get_by_minor(minor);
-       if (!i2c_dev)
-               return -ENODEV;
+       if (!i2c_dev) {
+               ret = -ENODEV;
+               goto out;
+       }
 
        adap = i2c_get_adapter(i2c_dev->adap->nr);
-       if (!adap)
-               return -ENODEV;
+       if (!adap) {
+               ret = -ENODEV;
+               goto out;
+       }
 
        /* This creates an anonymous i2c_client, which may later be
         * pointed to some address using I2C_SLAVE or I2C_SLAVE_FORCE.
@@ -460,7 +466,8 @@ static int i2cdev_open(struct inode *inode, struct file *file)
        client = kzalloc(sizeof(*client), GFP_KERNEL);
        if (!client) {
                i2c_put_adapter(adap);
-               return -ENOMEM;
+               ret = -ENOMEM;
+               goto out;
        }
        snprintf(client->name, I2C_NAME_SIZE, "i2c-dev %d", adap->nr);
        client->driver = &i2cdev_driver;
@@ -468,7 +475,9 @@ static int i2cdev_open(struct inode *inode, struct file *file)
        client->adapter = adap;
        file->private_data = client;
 
-       return 0;
+out:
+       unlock_kernel();
+       return ret;
 }
 
 static int i2cdev_release(struct inode *inode, struct file *file)
@@ -487,7 +496,7 @@ static const struct file_operations i2cdev_fops = {
        .llseek         = no_llseek,
        .read           = i2cdev_read,
        .write          = i2cdev_write,
-       .ioctl          = i2cdev_ioctl,
+       .unlocked_ioctl = i2cdev_ioctl,
        .open           = i2cdev_open,
        .release        = i2cdev_release,
 };
@@ -549,19 +558,12 @@ static int i2cdev_detach_adapter(struct i2c_adapter *adap)
        return 0;
 }
 
-static int i2cdev_detach_client(struct i2c_client *client)
-{
-       return 0;
-}
-
 static struct i2c_driver i2cdev_driver = {
        .driver = {
                .name   = "dev_driver",
        },
-       .id             = I2C_DRIVERID_I2CDEV,
        .attach_adapter = i2cdev_attach_adapter,
        .detach_adapter = i2cdev_detach_adapter,
-       .detach_client  = i2cdev_detach_client,
 };
 
 /* ------------------------------------------------------------------------- */