On Fri, 14 Jul 2006, Aleksey Gorelov wrote:
> > This patch causes hangs at reboot/shutdown/suspend time. See
> > http://www.zip.com.au/~akpm/linux/patches/stuff/dsc03597.jpg
> >
> Oops, I did not test it with suspend/resume stuff, sorry. The problem is that ehci_run is called
> from resume without its counterpart ehci_stop in suspend, so notifier ends up registered twice.
>
> David, Alan,
>
> Do you think it is Ok to unregister reboot notifier in ehci_run before registering one to make
> sure there is no 'double registering' of notifier, or is it better to move register/unregister
> reboot notifier from ehci_run/ehci_stop completely to some other place ?
Dave has a better idea than I do about where a good spot might be for
registering the notifier.
However, it is always possible to avoid "double registering" by keeping a
private flag that you set when the notifier is registered. Then you can
simply skip registering if the flag is already set.
Alan Stern
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