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Re: Seeking info on "disagrees about version of symbol" syndrome

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In article <4df1383c$0$1187$426a74cc@news.free.fr>,
Jean-Paul Iribarren <famirib@free.fr> wrote:
>----- Original Message ----- 
>From: "Alan Curry" <pacman@kosh.dhis.org>
>Newsgroups: comp.os.linux.development.system
>Sent: Thursday, June 09, 2011 9:42 PM
>Subject: Re: Seeking info on "disagrees about version of symbol" syndrome
>
>
>> [...]
>>>1001d1099
>>>< CONFIG_USB_SUSPEND=y
>>
>> Since you were trying to load usblp, this looks like the answer. That
>> power
>> management code has lots of tentacles.
>
>Hello Alan,
>
>Hhmmmm [scratching head]... I would agree if it had prevented my usblp
>module from *running*, but from *loading* ? With a dozen "disagrees about
>version of symbol" error messages targeting even the most common USB API
>functions like usb_alloc_urb() ? I don't really buy it, except if it's a
>side effect, e.g. perhaps this option resulted in kernel USB support code
>being shifted up or down in memory by a couple bytes, which could be the
>cause for the "version mismatch" ?

Yes, that's probably what happened. I haven't tracked down exactly how the
connection goes between them, but for example the size of struct usb_hcd is
affected by CONFIG_USB_SUSPEND, since it contains this field:

#ifdef CONFIG_USB_SUSPEND
	struct work_struct	wakeup_work;	/* for remote wakeup */
#endif

And that's going to affect a lot of things.

-- 
Alan Curry

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Thread

Seeking info on "disagrees about version of symbol" syndrome "Jean-Paul Iribarren" <famirib33@free.fr> - 2011-06-09 10:18 +0200
  Re: Seeking info on "disagrees about version of symbol" syndrome Rainer Weikusat <rweikusat@mssgmbh.com> - 2011-06-09 13:35 +0100
    Re: Seeking info on "disagrees about version of symbol" syndrome "Jean-Paul Iribarren" <famirib33@free.fr.invalid> - 2011-06-09 17:55 +0200
      Re: Seeking info on "disagrees about version of symbol" syndrome pacman@kosh.dhis.org (Alan Curry) - 2011-06-09 19:42 +0000
        Re: Seeking info on "disagrees about version of symbol" syndrome "Jean-Paul Iribarren" <famirib@free.fr> - 2011-06-09 23:16 +0200
          Re: Seeking info on "disagrees about version of symbol" syndrome pacman@kosh.dhis.org (Alan Curry) - 2011-06-09 22:39 +0000
            Re: Seeking info on "disagrees about version of symbol" syndrome Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-06-10 06:46 +0000
            Re: Seeking info on "disagrees about version of symbol" syndrome "Jean-Paul Iribarren" <famirib33@free.fr.invalid> - 2011-06-10 09:14 +0200
              Re: Seeking info on "disagrees about version of symbol" syndrome "Jean-Paul Iribarren" <famirib33@free.fr.invalid> - 2011-06-10 10:38 +0200
  Re: Seeking info on "disagrees about version of symbol" syndrome "Ersek, Laszlo" <lacos@caesar.elte.hu> - 2011-06-10 01:32 +0200
    Re: Seeking info on "disagrees about version of symbol" syndrome "Jean-Paul Iribarren" <famirib33@free.fr.invalid> - 2011-06-10 09:19 +0200

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