pktcdvd -> sysfs warning with 2.6.27

[Nix]

At the very end of my startup scripts, I say

pktsetup cdrw /dev/cdrw

to get the stuff in /etc/pktcdvd set up right.

As of 2.6.27 this has started complaining:

pktcdvd: writer pktcdvd0 mapped to hde
------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x2f/0x3b()
sysfs: duplicate filename '254:0' can not be created
Modules linked in:
Pid: 1306, comm: pktsetup Not tainted 2.6.27-dirty #1
 [<c011ac1c>] warn_slowpath+0x50/0x71
 [<c0245c17>] ? ida_get_new_above+0xdc/0x17d
 [<c0245a8a>] ? idr_get_empty_slot+0x142/0x1f3
 [<c0245c17>] ? ida_get_new_above+0xdc/0x17d
 [<c01a1738>] ? sysfs_ilookup_test+0x0/0x16
 [<c01a1919>] ? sysfs_find_dirent+0x1b/0x2c
 [<c01a1aba>] sysfs_add_one+0x2f/0x3b
 [<c01a26f6>] sysfs_do_create_link+0xb1/0x106
 [<c01a276b>] sysfs_create_link+0xf/0x14
 [<c02749d2>] device_add+0x134/0x455
 [<c0274d0a>] device_register+0x17/0x1a
 [<c0274d8d>] device_create_vargs+0x80/0xa3
 [<c0274dd0>] device_create+0x20/0x24
 [<c028208f>] pkt_setup_dev+0x2ed/0x429
 [<c0282251>] pkt_ctl_ioctl+0x86/0x18c
 [<c0170c09>] vfs_ioctl+0x55/0x6e
 [<c0185801>] ? block_truncate_page+0xa9/0x1e0
 [<c0170e58>] do_vfs_ioctl+0x236/0x249
 [<c0170e9c>] sys_ioctl+0x31/0x4d
 [<c0102c8d>] sysenter_do_call+0x12/0x25
 [<c0185801>] ? block_truncate_page+0xa9/0x1e0
 =======================
---[ end trace 1cdd10ab78ee5bc6 ]---

For the life of me I can't see where pkt_sysfs_dev_new() is being called
more than once: indeed, from the trace above GCC has inlined it into
pkt_setup_dev() as a static function called from only one place...
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