Hi, Sounds like your module didn't actually get inserted. Can you verify it is present with an lsmod? If it failed to insert, then check your klog. You can build the module into the kernel statically to verify that it works with the device node.
Matt ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Josue de Freitas Sent: Wednesday, October 10, 2007 1:53 PM To: uClinux development list Subject: [uClinux-dev] Kernel modules don't work on read-only filesystems ? Hi people, I'm trying to build the scull module example from Chapter 3 of Linux Device Drivers book and it's not working. I create a /dev/scull0 (with fixed major number, which is also configured on the module source) but when I stand up the module and try something like "dd if=/dev/zero of=/dev/scull0" it gives a message "dd: /dev/scull0: No such device". According to the book a "cat /proc/devices" should show the scull device when the module is up but nothing about scull is there, nothing changes on /proc/devices with or without the module loaded. So the main question is: dynamic module loading works perfectly on a read-only filesystem on uClinux ? If this is not the best place to this kind of question, please tell me where I can send this doubt. ;) Thanks in advance, Josue.
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