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    SubjectRe: [PATCH] fujitsu-laptop: consolidated fixes (NULL pointer checks, [un]registration fixes, etc)
    Hi all

    > > This patch consolidates the two patches posted by Bartlomiej Zolnierkiewicz
    > > and the NULL pointer patch which came out of a discussion with Julia Lawall.
    > > Some additional NULL pointer check tidy-ups have also been done.
    > >
    > > To summarise:
    > I think that for the increased readability and to preserve proper credits it
    > would be better to keep separate patches (updating the driver version can be
    > as well handled in an incremental patch).

    Ok, leave it with me and I'll re-split along these lines.

    > I would also strongly insist on removing the following needless NULL pointer
    > checks introduced by this version. They may hide real bugs in the ACPI driver
    > code (which should make sure that we always have valid 'device' in the ACPI
    > driver methods and that it doesn't go away while the method executes) or in
    > the fujitsu-laptop itself (which has to always provide valid 'fujitsu_hotkey',
    > 'fujitsu' and 'input' pointers and not free them while there are still some
    > users left).

    I'll take another look at these. What I was concerned about was whether the
    hotkey pointer in particular was valid in all cases (since some of the
    relevant laptops don't in fact have hotkeys) - and I was very short of time
    yesterday. I've had a very quick look through the code just now and it
    seems that this may not be a problem after all. In any case I'll confirm
    this over the next day or so and redo/reisssue the patches accordingly.


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