From 3db633ee352bfe20d4a2b0c3c8a46ce31a6c7149 Mon Sep 17 00:00:00 2001 From: Jonathan Corbet Date: Thu, 15 May 2008 09:21:02 -0600 Subject: i2c: cdev lock_kernel() pushdown Signed-off-by: Jonathan Corbet --- drivers/i2c/i2c-dev.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) (limited to 'drivers/i2c/i2c-dev.c') diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index d34c14c81c2..006a5857256 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -34,6 +34,7 @@ #include #include #include +#include #include static struct i2c_driver i2cdev_driver; @@ -441,14 +442,20 @@ 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 +467,8 @@ 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 +476,9 @@ 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) -- cgit v1.2.3-70-g09d2