linux-kernel - Re: [bug] fixed_init(): BUG: at drivers/base/core.c:120 device_release(), was: "2.6.21-rc5: known regressions"

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Message-ID: <20070330203124.7106ae08@vitb.ru.mvista.com>
Date:	Fri, 30 Mar 2007 20:31:24 +0400
From:	Vitaly Bordug <vbordug@...mvista.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Greg KH <gregkh@...e.de>, Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [bug] fixed_init(): BUG: at drivers/base/core.c:120
 device_release(), was: "2.6.21-rc5: known regressions"

On Fri, 30 Mar 2007 16:25:14 +0200
Ingo Molnar <mingo@...e.hu> wrote:

> 
> * Greg KH <gregkh@...e.de> wrote:
> 
> > > Device 'fixed@10:1' does not have a release() function, it is broken and must be fixed.
> > > BUG: at drivers/base/core.c:120 device_release()
> > >  [<c0105ff9>] show_trace_log_lvl+0x19/0x2e
> > >  [<c01063e2>] show_trace+0x12/0x14
> > >  [<c01063f8>] dump_stack+0x14/0x16
> > >  [<c063cddf>] device_release+0x7c/0x7e
> > >  [<c0476c32>] kobject_cleanup+0x44/0x5e
> > >  [<c0476c57>] kobject_release+0xb/0xd
> > >  [<c04773ef>] kref_put+0x63/0x71
> > >  [<c0476757>] kobject_put+0x14/0x16
> > >  [<c063ceef>] put_device+0x11/0x13
> > >  [<c063d943>] device_unregister+0x12/0x15
> > >  [<c07337d1>] fixed_mdio_register_device+0x210/0x23b
> > >  [<c1b6d6c1>] fixed_init+0x2f/0x33
> > >  [<c1b31a2d>] init+0x15d/0x2bd
> > >  [<c0105bc3>] kernel_thread_helper+0x7/0x10
> > 
> > That means that whatever driver has fixed_mdio_register_device() in it 
> > is broken and needs to be fixed.
> 
> that would be drivers/net/phy/fixed.c.
> 

OK, I'll look into it, thanks for pointing out.

> > It is independant from your previous question about unregistering the 
> > device from within module_init().
> 
> (yes - hence the different subject line, etc.)
> 


-- 
Sincerely, 
Vitaly
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