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    SubjectRe: [patch] 2.5 videodev redesign -- #3
    Date
    Am Montag, 4. März 2002 10:47 schrieb Gerd Knorr:
    > > > Comments? Bugs? I plan to feed this to Linus soon ...
    > >
    > > Hi,
    > >
    > > it seems to me that you are not holding the BKL during
    > > the open method of the individual driver. This will
    > > cause races with unplugging on some USB cameras.
    >
    > What race exactly?

    open() can race with videodev_unregister()

    > I don't want videodev.c know details about the devices, it doesn't
    > belong there. If a usb cam needs locking, the usb cam's open() function
    > should do that then. I'll prefare fixing the usb drivers instead of
    > calling driver->open() with BKL held.

    Problematic. I found no other solution than the BKL.

    Regards
    Oliver
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