Re: [RFC / PATCH] [SPI] get_module while using it.

[David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>]

On Thursday 24 April 2008, Sebastian Siewior wrote:
> >And removing the subsidiary devices is supposed to unbind
> >them ... though looking at it quickly, I suspect that the
> >"spidev" driver doesn't check for unbound devices in its
> >various I/O paths.
> 
> Aha. So you mean that the read function which was spidev_read() while
> the controller was available should point to something else once the
> controller is gone?

No, I mean that the issue is most likely a spidev bug.

> >So this sounds like a bug in the controller driver, or else
> >in how spidev handles unbind.
>
> I try to look later at spidev once I find something that does a similar
> job and works as expected....

They're all over the place, though not with SPI.  The unbind
method just updates some state that's checked in the I/O ops.

- Dave
 



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