diff options
Diffstat (limited to 'drivers/i2c/i2c-dev.c')
-rw-r--r-- | drivers/i2c/i2c-dev.c | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index aa7a4fadef64..ea14c8f1c82b 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c | |||
@@ -26,15 +26,11 @@ | |||
26 | 26 | ||
27 | /* The I2C_RDWR ioctl code is written by Kolja Waschk <waschk@telos.de> */ | 27 | /* The I2C_RDWR ioctl code is written by Kolja Waschk <waschk@telos.de> */ |
28 | 28 | ||
29 | /* The devfs code is contributed by Philipp Matthias Hahn | ||
30 | <pmhahn@titan.lahn.de> */ | ||
31 | |||
32 | #include <linux/kernel.h> | 29 | #include <linux/kernel.h> |
33 | #include <linux/module.h> | 30 | #include <linux/module.h> |
34 | #include <linux/fs.h> | 31 | #include <linux/fs.h> |
35 | #include <linux/slab.h> | 32 | #include <linux/slab.h> |
36 | #include <linux/smp_lock.h> | 33 | #include <linux/smp_lock.h> |
37 | #include <linux/devfs_fs_kernel.h> | ||
38 | #include <linux/init.h> | 34 | #include <linux/init.h> |
39 | #include <linux/i2c.h> | 35 | #include <linux/i2c.h> |
40 | #include <linux/i2c-dev.h> | 36 | #include <linux/i2c-dev.h> |
@@ -80,10 +76,9 @@ static struct i2c_dev *get_free_i2c_dev(struct i2c_adapter *adap) | |||
80 | { | 76 | { |
81 | struct i2c_dev *i2c_dev; | 77 | struct i2c_dev *i2c_dev; |
82 | 78 | ||
83 | i2c_dev = kmalloc(sizeof(*i2c_dev), GFP_KERNEL); | 79 | i2c_dev = kzalloc(sizeof(*i2c_dev), GFP_KERNEL); |
84 | if (!i2c_dev) | 80 | if (!i2c_dev) |
85 | return ERR_PTR(-ENOMEM); | 81 | return ERR_PTR(-ENOMEM); |
86 | memset(i2c_dev, 0x00, sizeof(*i2c_dev)); | ||
87 | 82 | ||
88 | spin_lock(&i2c_dev_array_lock); | 83 | spin_lock(&i2c_dev_array_lock); |
89 | if (i2c_dev_array[adap->nr]) { | 84 | if (i2c_dev_array[adap->nr]) { |
@@ -177,8 +172,8 @@ static int i2cdev_ioctl(struct inode *inode, struct file *file, | |||
177 | int i,datasize,res; | 172 | int i,datasize,res; |
178 | unsigned long funcs; | 173 | unsigned long funcs; |
179 | 174 | ||
180 | dev_dbg(&client->adapter->dev, "i2c-%d ioctl, cmd: 0x%x, arg: %lx.\n", | 175 | dev_dbg(&client->adapter->dev, "ioctl, cmd=0x%02x, arg=0x%02lx\n", |
181 | iminor(inode),cmd, arg); | 176 | cmd, arg); |
182 | 177 | ||
183 | switch ( cmd ) { | 178 | switch ( cmd ) { |
184 | case I2C_SLAVE: | 179 | case I2C_SLAVE: |
@@ -432,8 +427,6 @@ static int i2cdev_attach_adapter(struct i2c_adapter *adap) | |||
432 | if (IS_ERR(i2c_dev)) | 427 | if (IS_ERR(i2c_dev)) |
433 | return PTR_ERR(i2c_dev); | 428 | return PTR_ERR(i2c_dev); |
434 | 429 | ||
435 | devfs_mk_cdev(MKDEV(I2C_MAJOR, i2c_dev->minor), | ||
436 | S_IFCHR|S_IRUSR|S_IWUSR, "i2c/%d", i2c_dev->minor); | ||
437 | pr_debug("i2c-dev: adapter [%s] registered as minor %d\n", | 430 | pr_debug("i2c-dev: adapter [%s] registered as minor %d\n", |
438 | adap->name, i2c_dev->minor); | 431 | adap->name, i2c_dev->minor); |
439 | 432 | ||
@@ -466,7 +459,6 @@ static int i2cdev_detach_adapter(struct i2c_adapter *adap) | |||
466 | return -ENODEV; | 459 | return -ENODEV; |
467 | 460 | ||
468 | init_completion(&i2c_dev->released); | 461 | init_completion(&i2c_dev->released); |
469 | devfs_remove("i2c/%d", i2c_dev->minor); | ||
470 | return_i2c_dev(i2c_dev); | 462 | return_i2c_dev(i2c_dev); |
471 | class_device_unregister(&i2c_dev->class_dev); | 463 | class_device_unregister(&i2c_dev->class_dev); |
472 | wait_for_completion(&i2c_dev->released); | 464 | wait_for_completion(&i2c_dev->released); |
@@ -522,8 +514,6 @@ static int __init i2c_dev_init(void) | |||
522 | if (res) | 514 | if (res) |
523 | goto out_unreg_class; | 515 | goto out_unreg_class; |
524 | 516 | ||
525 | devfs_mk_dir("i2c"); | ||
526 | |||
527 | return 0; | 517 | return 0; |
528 | 518 | ||
529 | out_unreg_class: | 519 | out_unreg_class: |
@@ -539,7 +529,6 @@ static void __exit i2c_dev_exit(void) | |||
539 | { | 529 | { |
540 | i2c_del_driver(&i2cdev_driver); | 530 | i2c_del_driver(&i2cdev_driver); |
541 | class_unregister(&i2c_dev_class); | 531 | class_unregister(&i2c_dev_class); |
542 | devfs_remove("i2c"); | ||
543 | unregister_chrdev(I2C_MAJOR,"i2c"); | 532 | unregister_chrdev(I2C_MAJOR,"i2c"); |
544 | } | 533 | } |
545 | 534 | ||