[MinnowBoard] LED: Kernel Dump

[Abraham Arce]

Hi,

While working with Martin Oldfield's documentation
 http://www.mjoldfield.com/atelier/2014/12/mbmx-leds.html
I am having the below kernel dump when module seabass-leds is remove

https://github.com/mjoldfield/seabass/blob/master/seabass-leds/seabass-leds.c

[ 1552.096607] ------------[ cut here ]------------
[ 1552.096623] WARNING: CPU: 0 PID: 16840 at drivers/base/core.c:250
device_release+0x7b/0x87()
[ 1552.096627] Device 'leds-gpio' does not have a release() function, it is
broken and must be fixed.
[ 1552.096633] Modules linked in: seabass_leds(O-) ledtrig_oneshot
ledtrig_heartbeat leds_gpio bnep rfcomm bluetooth rfkill nfsd auth_rpcgss
oid_registry nfs_acl nfs lockd grace fscache sunrpc nls_utf8 nls_cp437 vfat
fat loop coretemp iTCO_wdt kvm_intel iTCO_vendor_support kvm
snd_hda_codec_hdmi snd_hda_intel snd_hda_controller ghash_clmulni_intel
snd_hda_codec snd_hwdep snd_pcm snd_seq aesni_intel aes_x86_64 ablk_helper
cryptd snd_timer lrw snd_seq_device gf128mul glue_helper microcode pcspkr
efivars snd lpc_ich mfd_core i2c_i801 joydev soundcore dw_dmac dw_dmac_core
i2c_designware_platform spi_pxa2xx_platform i2c_designware_core processor
evdev ext4 crc16 jbd2 mbcache hid_generic usbhid hid crc32c_intel sd_mod
thermal [last unloaded: seabass_leds]
[ 1552.096736] CPU: 0 PID: 16840 Comm: rmmod Tainted: G        W  O
4.0.0-rc3+ #4
[ 1552.096741] Hardware name: Intel Corp. Minnowboard Max B3
PLATFORM/NOTEBOOK, BIOS MNW2MAX1.X64.0073.R02.1409160934 09/16/2014
[ 1552.096745]  0000000000000000 0000000000000009 ffffffff814dee1e
ffff88005dbd3e78
[ 1552.096753]  ffffffff8103e8bb ffffffffa03cb020 ffffffff8135741c
0000000000000000
[ 1552.096760]  ffffffffa03cb020 ffffffffa03cb010 ffff880065d1c7c0
00007fff2607a826
[ 1552.096767] Call Trace:
[ 1552.096779]  [<ffffffff814dee1e>] ? dump_stack+0x40/0x50
[ 1552.096788]  [<ffffffff8103e8bb>] ? warn_slowpath_common+0x98/0xb0
[ 1552.096796]  [<ffffffff8135741c>] ? device_release+0x7b/0x87
[ 1552.096804]  [<ffffffff8103e96b>] ? warn_slowpath_fmt+0x45/0x4a
[ 1552.096812]  [<ffffffff8135741c>] ? device_release+0x7b/0x87
[ 1552.096821]  [<ffffffff811df232>] ? kobject_cleanup+0x43/0x59
[ 1552.096831]  [<ffffffffa03c901b>] ? seabass_exit+0x1b/0x1000
[seabass_leds]
[ 1552.096847]  [<ffffffffa03c9000>] ? 0xffffffffa03c9000
[ 1552.096855]  [<ffffffff8109316e>] ? SyS_delete_module+0x12d/0x1a3
[ 1552.096864]  [<ffffffff81002680>] ? do_notify_resume+0x3b/0x48
[ 1552.096872]  [<ffffffff814e3fa9>] ? int_signal+0x12/0x17
[ 1552.096880]  [<ffffffff814e3d72>] ? system_call_fastpath+0x12/0x17
[ 1552.096885] ---[ end trace 6e432b721aa0aeb8 ]---
[ 1552.096890] seabass: led exit
[ 1578.843786] seabass: module init
[ 1578.844231] seabass: led init stat = 0

Best Regards
Abraham
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