linux-kernel - Re: [PATCH 2/2] ts2020: Provide DVBv5 API signal strength

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Message-ID: <31746.1433349441@warthog.procyon.org.uk>
Date:	Wed, 03 Jun 2015 17:37:21 +0100
From:	David Howells <dhowells@...hat.com>
To:	Malcolm Priestley <tvboxspy@...il.com>
Cc:	dhowells@...hat.com, crope@....fi, linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org
Subject: Re: [PATCH 2/2] ts2020: Provide DVBv5 API signal strength

Malcolm Priestley <tvboxspy@...il.com> wrote:

> >> Yes, also, the workqueue appears not to be initialized when using the dvb
> >> attached method.
> >
> > I'm not sure what you're referring to.  It's initialised in ts2020_probe()
> > just after the ts2020_priv struct is allocated - the only place it is
> > allocated.
> >
> ts2020_probe() isn't touched by devices not converted to I2C binding.

Hmmm...  Doesn't that expose a larger problem?  The only place the ts2020_priv
struct is allocated is in ts2020_probe() within ts2020.c and the struct
definition is private to that file and so it can't be allocated from outside.
So if you don't pass through ts2020_probe(), fe->tuner_priv will remain NULL
and the driver will crash.

David
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