Re: Does register_chrdev function make device file under /dev ?

[Kernel <bu.kernel@xxxxxxxxx>]

On Mar 10, 2014, at 10:25 PM, 김찬 <ckim@xxxxxxxxxx> wrote:

Hi,

 

This should be a basic question.

Does the regisetr_chrdev function make the device file under /dev directory?

I am running linux on our embedded system and inside vcs_init, register_chrdev is called as below.

 

int __init vcs_init(void)
{
        unsigned int i;

        if (register_chrdev(VCS_MAJOR, "vcs", &vcs_fops))
                panic("unable to get major %d for vcs device", VCS_MAJOR);

 

I can see the function is returning ok but I don't see any vcs* file under /dev.

Does it only register the device on /sys or /proc directory and not under /dev?

Thanks in advance.

 

Chan

 

You have to create a device file using 'mknod'

Ex: mknod -m 666 /dev/vcs c <major no> <minor no>

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