linux-kernel - Re: [3.16.1 BISECTED REGRESSION]: Simtec Entropy Key (cdc-acm) broken in 3.16

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Message-ID: <20141019134551.GA2206@localhost>
Date:	Sun, 19 Oct 2014 15:45:51 +0200
From:	Johan Hovold <johan@...nel.org>
To:	Nix <nix@...eri.org.uk>
Cc:	Johan Hovold <johan@...nel.org>, Paul Martin <pm@...ian.org>,
	Oliver Neukum <oliver@...kum.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [3.16.1 BISECTED REGRESSION]: Simtec Entropy Key (cdc-acm)
 broken in 3.16

On Fri, Oct 17, 2014 at 02:21:35PM +0100, Nix wrote:
> On 14 Oct 2014, Johan Hovold outgrape:
> > Another thing you could try is to add back the 
> >
> > 	acm_set_control(acm, 0);
> >
> > just after the dev_info message in probe.
> 
> "Add back" suggests that this line existed before this change. It
> didn't, as far as I can see. Probing has
> 
> acm_set_control(acm, acm->ctrlout);
> 
> *shutdown* has
> 
> acm_set_control(acm, acm->ctrlout = 0);
> 
> Did you mean that I should try adding back the acm_set_control() during
> shutdown, or the one during probe?

After the dev_info in probe as I wrote. acm->ctrlout will always be 0 at
that point, could have been more clear about that.

Johan
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