Apologies for the confusion with kernel tainting. It was a combination of
late nights and memory loss while trying to chase down the problem in
Ubuntu. I've attached the snippet of dmesg which I think relates to the
modprobe gpio command.
I honestly don't understand the error message but it seems like Ubuntu is
complaining about a duplicate gpio class. I've hunted around and can't
find anything that seems to reference gpio but then I'm still fairly new
to the guts of linux.
Here are the important looking bits of the error message:
"sysfs: cannot create duplicate filename '/class/gpio'"
"Pid: 5486, comm: modprobe Not tainted 2.6.32-21-generic #32-Ubuntu"
"kobject_add_internal failed for gpio with -EEXIST, don't try to register
things with the same name in the same directory."
I'm probably going to stick with Debian (or if I can convince myself to
relearn Red Hat maybe CentOS) so its not a big problem from my point of
view.
Cheers for the response anyway.
Wayne
On Fri, 21 Oct 2011 15:39:10 +0100, Fred Gleason
<[email protected]> wrote:
On Oct 21, 2011, at 07:45 27, Wayne Merricks wrote:
Thankfully Debian works
without moaning about Kernel Taint like Ubuntu.
What exactly is it complaining about? GPIO is GPLv2 -- there shouldn't
be a problem with tainted kernels!
Cheers!
|-------------------------------------------------------------------------|
| Frederick F. Gleason, Jr. | Chief
Developer |
| | Paravel
Systems |
|-------------------------------------------------------------------------|
| Logic is a way to go wrong with
confidence. |
| --Robert
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| "The Notebooks of Lazarus
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[ 395.620614] WARNING: at /build/buildd/linux-2.6.32/fs/sysfs/dir.c:491
sysfs_add_one+0xa0/0x100()
[ 395.620620] Hardware name: DIM4400
[ 395.620624] sysfs: cannot create duplicate filename '/class/gpio'
[ 395.620627] Modules linked in: gpio(+) binfmt_misc snd_ice1712
snd_ice17xx_ak4xxx snd_ak4xxx_adda snd_cs8427 snd_ac97_codec snd_pcm_oss
snd_mixer_oss snd_pcm fbcon snd_page_alloc tileblit font ac97_bus bitblit
snd_i2c snd_mpu401_uart softcursor snd_seq_dummy vga16fb snd_seq_oss vgastate
snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq nouveau snd_timer ttm
drm_kms_helper snd_seq_device drm i2c_algo_bit snd intel_agp soundcore psmouse
agpgart ppdev parport_pc dell_wmi lp serio_raw dcdbas shpchp parport e100
floppy mii usbhid hid
[ 395.620711] Pid: 5486, comm: modprobe Not tainted 2.6.32-21-generic
#32-Ubuntu
[ 395.620715] Call Trace:
[ 395.620728] [<c014c3d2>] warn_slowpath_common+0x72/0xa0
[ 395.620737] [<c025feb0>] ? sysfs_add_one+0xa0/0x100
[ 395.620743] [<c025feb0>] ? sysfs_add_one+0xa0/0x100
[ 395.620750] [<c014c44b>] warn_slowpath_fmt+0x2b/0x30
[ 395.620757] [<c025feb0>] sysfs_add_one+0xa0/0x100
[ 395.620763] [<c025ff5e>] create_dir+0x4e/0x90
[ 395.620769] [<c025ffd0>] sysfs_create_dir+0x30/0x50
[ 395.620778] [<c034be12>] kobject_add_internal+0x92/0x1d0
[ 395.620784] [<c0354503>] ? kvasprintf+0x43/0x60
[ 395.620791] [<c034bf77>] kset_register+0x27/0x50
[ 395.620799] [<c03e76a6>] __class_register+0xd6/0x1c0
[ 395.620805] [<c03e78b2>] __class_create+0x72/0xa0
[ 395.620817] [<f09b3126>] init_module+0x156/0x310 [gpio]
[ 395.620827] [<c01a7517>] ? tracepoint_module_notify+0x27/0x30
[ 395.620837] [<c058dd63>] ? notifier_call_chain+0x43/0x60
[ 395.620844] [<c0101131>] do_one_initcall+0x31/0x190
[ 395.620853] [<f09b2fd0>] ? init_module+0x0/0x310 [gpio]
[ 395.620862] [<c0182340>] sys_init_module+0xb0/0x210
[ 395.620868] [<c01033ec>] syscall_call+0x7/0xb
[ 395.620873] ---[ end trace f6bed10a7a3f5211 ]---
[ 395.620881] kobject_add_internal failed for gpio with -EEXIST, don't try to
register things with the same name in the same directory.
[ 395.620891] Pid: 5486, comm: modprobe Tainted: G W 2.6.32-21-generic
#32-Ubuntu
[ 395.620894] Call Trace:
[ 395.620903] [<c0588f42>] ? printk+0x1d/0x23
[ 395.620909] [<c034bebc>] kobject_add_internal+0x13c/0x1d0
[ 395.620916] [<c034bf77>] kset_register+0x27/0x50
[ 395.620921] [<c03e76a6>] __class_register+0xd6/0x1c0
[ 395.620927] [<c03e78b2>] __class_create+0x72/0xa0
[ 395.620936] [<f09b3126>] init_module+0x156/0x310 [gpio]
[ 395.620943] [<c01a7517>] ? tracepoint_module_notify+0x27/0x30
[ 395.620950] [<c058dd63>] ? notifier_call_chain+0x43/0x60
[ 395.620956] [<c0101131>] do_one_initcall+0x31/0x190
[ 395.620964] [<f09b2fd0>] ? init_module+0x0/0x310 [gpio]
[ 395.620971] [<c0182340>] sys_init_module+0xb0/0x210
[ 395.620977] [<c01033ec>] syscall_call+0x7/0xb
[ 395.620981] Error creating gpio class.
[ 395.620990] Trying to free nonexistent resource
<00000000feaffc00-00000000feaffc7f>
[ 395.620996] Trying to free nonexistent resource
<0000000000000000-00000000ffffffff>
[ 395.621000] Trying to free nonexistent resource
<0000000000000000-00000000ffffffff>
[ 395.621005] Trying to free nonexistent resource
<0000000000000000-00000000ffffffff>
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