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    SubjectRe: [PATCH 5/5] driver core: let dev_set_drvdata return int instead of void as it can fail
    2011/4/6 Uwe Kleine-König <>:
    > Signed-off-by: Uwe Kleine-König <>
    > ---
    > Hello,
    > I wasn't sure what to return when dev_set_drvdata is called with
    > dev=NULL.  I choosed 0, but -EINVAL would be OK for me, too. What do you
    > think?

    Why not just BUG_ON(!dev)? Is there a case when you might call this
    with dev==NULL that's not a driver bug?

    Best Regards,
    Michał Mirosław
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