diff options
Diffstat (limited to 'drivers/i2c/i2c-dev.c')
| -rw-r--r-- | drivers/i2c/i2c-dev.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 7e13d2df9af3..f4110aa49600 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c | |||
| @@ -34,7 +34,6 @@ | |||
| 34 | #include <linux/list.h> | 34 | #include <linux/list.h> |
| 35 | #include <linux/i2c.h> | 35 | #include <linux/i2c.h> |
| 36 | #include <linux/i2c-dev.h> | 36 | #include <linux/i2c-dev.h> |
| 37 | #include <linux/smp_lock.h> | ||
| 38 | #include <linux/jiffies.h> | 37 | #include <linux/jiffies.h> |
| 39 | #include <asm/uaccess.h> | 38 | #include <asm/uaccess.h> |
| 40 | 39 | ||
| @@ -445,20 +444,14 @@ static int i2cdev_open(struct inode *inode, struct file *file) | |||
| 445 | struct i2c_client *client; | 444 | struct i2c_client *client; |
| 446 | struct i2c_adapter *adap; | 445 | struct i2c_adapter *adap; |
| 447 | struct i2c_dev *i2c_dev; | 446 | struct i2c_dev *i2c_dev; |
| 448 | int ret = 0; | ||
| 449 | 447 | ||
| 450 | lock_kernel(); | ||
| 451 | i2c_dev = i2c_dev_get_by_minor(minor); | 448 | i2c_dev = i2c_dev_get_by_minor(minor); |
| 452 | if (!i2c_dev) { | 449 | if (!i2c_dev) |
| 453 | ret = -ENODEV; | 450 | return -ENODEV; |
| 454 | goto out; | ||
| 455 | } | ||
| 456 | 451 | ||
| 457 | adap = i2c_get_adapter(i2c_dev->adap->nr); | 452 | adap = i2c_get_adapter(i2c_dev->adap->nr); |
| 458 | if (!adap) { | 453 | if (!adap) |
| 459 | ret = -ENODEV; | 454 | return -ENODEV; |
| 460 | goto out; | ||
| 461 | } | ||
| 462 | 455 | ||
| 463 | /* This creates an anonymous i2c_client, which may later be | 456 | /* This creates an anonymous i2c_client, which may later be |
| 464 | * pointed to some address using I2C_SLAVE or I2C_SLAVE_FORCE. | 457 | * pointed to some address using I2C_SLAVE or I2C_SLAVE_FORCE. |
| @@ -470,8 +463,7 @@ static int i2cdev_open(struct inode *inode, struct file *file) | |||
| 470 | client = kzalloc(sizeof(*client), GFP_KERNEL); | 463 | client = kzalloc(sizeof(*client), GFP_KERNEL); |
| 471 | if (!client) { | 464 | if (!client) { |
| 472 | i2c_put_adapter(adap); | 465 | i2c_put_adapter(adap); |
| 473 | ret = -ENOMEM; | 466 | return -ENOMEM; |
| 474 | goto out; | ||
| 475 | } | 467 | } |
| 476 | snprintf(client->name, I2C_NAME_SIZE, "i2c-dev %d", adap->nr); | 468 | snprintf(client->name, I2C_NAME_SIZE, "i2c-dev %d", adap->nr); |
| 477 | client->driver = &i2cdev_driver; | 469 | client->driver = &i2cdev_driver; |
| @@ -479,9 +471,7 @@ static int i2cdev_open(struct inode *inode, struct file *file) | |||
| 479 | client->adapter = adap; | 471 | client->adapter = adap; |
| 480 | file->private_data = client; | 472 | file->private_data = client; |
| 481 | 473 | ||
| 482 | out: | 474 | return 0; |
| 483 | unlock_kernel(); | ||
| 484 | return ret; | ||
| 485 | } | 475 | } |
| 486 | 476 | ||
| 487 | static int i2cdev_release(struct inode *inode, struct file *file) | 477 | static int i2cdev_release(struct inode *inode, struct file *file) |
