On Thu, 2009-06-18 at 15:30 -0700, hong zhang wrote: > The book of linux device driver says register_chrdev will go away and do not use it. Then use register_chrdev_region() as that book suggests. This way, you specify how many devices you need rather than just take 256 of them. > Do you mean misc_register only can handle one device? For example, > there are several wifi devices, misc_register can only deal one of > them not all? Correct. misc_register() is for unique character devices, such as /dev/null. If you intend to have one character device per one hardware device, and the hardware device is not guaranteed to be unique for the system (e.g. be present at most in one instance), then misc_register() is not what you need. -- Regards, Pavel Roskin
