Re: [regression] Since kernel 6.3.1 logitech unify receiver not working properly

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On Wed, 24 May 2023, Benjamin Tissoires wrote:

> > > That bug is pre-existing (ie the problem was not introduced by that
> > > commit), but who knows if the retry makes things worse (ie if it then
> > > triggers on a retry, the response data will be the *previous* response).
> > >
> > > The whole "goto exit" games should be removed too, because we're in a
> > > for-loop, and instead of "goto exit" it should just do "break".
> > >
> > > IOW, something like this might be worth testing.
> > >
> > > That said, while I think the code is buggy, I doubt this is the actual
> > > cause of the problem people are reporting. But it would be lovely to
> > > hear if the attached patch makes any difference, and I think this is
> > > fixing a real - but unlikely - problem anyway.
> 
> FWIW, Linus, your patch is
> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
> 
> Feel free to submit it to us or to apply it directly if you prefer as
> this is clearly a fix for a code path issue.

It would be nice to hear from the people who were able to reproduce the 
issue whether this makes any observable difference in behavior though. I 
don't currently think it would, as it fixes a potential NULL pointer 
dereference, which is not what has been reported.

Has anyone of the affected people tried to bisect the issue?

Thanks,

-- 
Jiri Kosina
SUSE Labs




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