lkml.org 
[lkml]   [2003]   [Jun]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [2.5 PATCH] bug if cpufreq driver initialization fails
On Sun, Jun 15, 2003 at 02:25:07PM -0400, Samuel Thibault wrote:
> 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)

Also, I think people need to consider whether "all devices failed"
or "any device failed" counts as overall failure.

--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:36    [W:0.063 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site