lkml.org 
[lkml]   [2001]   [Feb]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectMissing 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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:52    [W:0.064 / U:3.812 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site