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SubjectRe: [PATCH] drivers-core: nullify private pointer on device-release
On Thu, 1 Oct 2009, Greg KH wrote:

> On Thu, Oct 01, 2009 at 10:02:08AM +0200, Guennadi Liakhovetski wrote:
> > Device structures can be reused over multiple device_add / device_release
> > cycles.
>
> They shouldn't be as they should be dynamic, not static.

Should they? I'm pretty sure this is not the first time this comes up -
there are several drivers and / or subsystems, that re-use driver objects.
But finding in mail archives wouldn't be very easy. And it worked until
now - why should we break it?

> What device is having this problem?

My problem case is the soc-camera framework. There device struct is
embedded into the video client object, which are kept as long as the
driver is loaded.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/


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