Re: [PATCH 4/6] v4l2-event: Don't set sev->fh to NULL on unsubcribe

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Hi Hans,

On Friday 28 October 2011 10:35:54 Hans de Goede wrote:
> On 10/27/2011 02:20 PM, Laurent Pinchart wrote:
> > On Thursday 27 October 2011 13:18:01 Hans de Goede wrote:
> >> 1: There is no reason for this after v4l2_event_unsubscribe releases the
> >> spinlock nothing is holding a reference to the sev anymore except for
> >> the local reference in the v4l2_event_unsubscribe function.
> >> 
> >> 2: Setting sev->fh to NULL causes problems for the del op added in the
> >> next patch of this series, since this op needs a way to get to its own
> >> data structures, and typically this will be done by using container_of
> >> on an embedded v4l2_fh struct.
> >> 
> >> Signed-off-by: Hans de Goede<hdegoede@xxxxxxxxxx>
> > 
> > Acked-by: Laurent Pinchart<laurent.pinchart@xxxxxxxxxxxxxxxx>
> > 
> > While reviewing the patch I noticed that v4l2_event_unsubscribe_all()
> > calls v4l2_event_unsubscribe(), which performs control lookup again. Is
> > there a reason for that, instead of handling event unsubscription
> > directly in v4l2_event_unsubscribe_all() ?
> 
> I didn't write that part, so I'll let Hans V. answer this question.

I know, that's why I still acked your patch :-)

-- 
Regards,

Laurent Pinchart
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