table of contents
__REGISTER_CHRDEV(9) | Char devices | __REGISTER_CHRDEV(9) |
NAME¶
__register_chrdev - create and register a cdev occupying a range of minors
SYNOPSIS¶
int __register_chrdev(unsigned int major, unsigned int baseminor, unsigned int count, const char * name, const struct file_operations * fops);
ARGUMENTS¶
major
baseminor
count
name
fops
DESCRIPTION¶
If major == 0 this functions will dynamically allocate a major and return its number.
If major > 0 this function will attempt to reserve a device with the given major number and will return zero on success.
Returns a -ve errno on failure.
The name of this device has nothing to do with the name of the device in /dev. It only helps to keep track of the different owners of devices. If your module name has only one type of devices it´s ok to use e.g. the name of the module here.
COPYRIGHT¶
April 2023 | Kernel Hackers Manual 2.6. |