Re: [2.5 PATCH] bug if cpufreq driver initialization fails

From: Samuel Thibault (
Date: Sun Jun 15 2003 - 13:25:07 EST

Le dim 15 jun 2003 19:16:50 GMT, Russell King a tapoté sur son clavier :
> On Sun, Jun 15, 2003 at 02:04:36PM -0400, Samuel Thibault wrote:
> > I hence modified drivers/base/sys.c to have sysdev_driver_register()
> > fail as well, and then I also had to modify kernel/cpufreq.c, because
> > this failure did not imply a setting cpufreq_driver to NULL (preventing
> > me from reinsmoding speedstep-ich: EBUSY)
> Unfortunately, you created a by by doing so. Eg:
> - you have 3 devices on kset.list.
> - you successfully register 2 of them with a driver.
> - you fail one.
> - sysdev_driver_register returns failure.
> - module is unloaded while other parts of the kernel have references into
> the driver.
> - the kernel oopses.
Ok, that's what I was wondering, might an exit loop removing the already
added driver be done?

(the second half of the patch might still be applied as soon as now)

Samuel Thibault
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