Missing modversions.h in module sources for 2.4.x?

From: Martin Bogomolni (andovernet@earthlink.net)
Date: Sat Feb 03 2001 - 00:28:13 EST

  • Next message: Keith Owens: "Re: Missing modversions.h in module sources for 2.4.x?"

    While trying to compile a new driver for an 802.11 pci card, I started
    work on upgrading the linux-wlan utilites to 2.4.0. Other than the
    usual small things (like replacing references to kfree_s with kfree) the
    work was going pretty smoothly.

    I spent a good hour though, trying to debug one problem. The device
    driver depends on having netlink in the kernel. When I attempted to
    load the driver however, it would give me an unresolved symbol error
    for netlink_broadcast, and netlink_kernel_create.

    A quick fgrep of /proc/ksyms showed the error.. No version information
    was included in the kernel symbol table.

    e.g. When loading usb-storage.o, with an SMP compiled kernel + modversions :

    insmod usb-storage
    Using /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved sd
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_deregister
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_free_dev
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_free_urb
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_inc_dev_use
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_alloc_urb
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_register
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_reset_device
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_string
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_submit_urb
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_control_msg
    /lib/modules/2.4.1-SMP/kernel/drivers/usb/storage/usb-storage.o:
    unresolved symbol usb_unlink_urb

    A quick peek at /proc/ksyms shows :

    fgrep usb_match_id /proc/ksyms
    c02817f0 usb_match_id_R__ver_usb_match_id

                    ~ ~ ~

    The solution was to add the #include <linux/modversions.h> header
    into each of the drivers affected. However, I have a feeling that
    there are a lot of these "gotchas" still out there in 2.4.

    Thoughts?

    Martin.
    martinb@valinux.com

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    This archive was generated by hypermail 2b29 : Sat Feb 03 2001 - 00:29:36 EST