Re: cm4000 device creation again

[Jan Niehusmann <jan@gondor.com>]

Greg KH wrote:
> On Thu, Apr 06, 2006 at 04:02:26PM +0200, Harald Welte wrote:

>> cmm_class = class_create(THIS_MODULE, "cardman_4000");
>> major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
>> class_device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
>>
>> where 'i' is the minor number.
> 
> Hm, that seems just fine.  And no "dev" file is being created in the
> sysfs directory?  That should work...

Maybe the code is in the wrong location or doesn't get called for some
other reason? I observed the following:

If I have the card plugged in at bootup, no /dev/cmm0 gets created, and
/sys/class/cardman_4000/cmm0/ only contains uevent, no file called dev.

But if I first load the cm4000_cs module manually and plug in the card
after that, both /sys/class/cardman_4000/cmm0/dev and /dev/cmm0 appear.

So it looks to me like either class_device_create doesn't get called if
the cm4000_cs gets loaded in response to the card being inserted, or it
does get called but doesn't work because something else is not yet
properly initialized at that time.

Does that make sense?

Jan



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