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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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