netdev - Re: gigaset: freeing an active object

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Message-ID: <1448917663.3546.29.camel@tiscali.nl>
Date:	Mon, 30 Nov 2015 22:07:43 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Tilman Schmidt <tilman@...p.cc>,
	Peter Hurley <peter@...leysoftware.com>,
	Sasha Levin <sasha.levin@...cle.com>
Cc:	isdn@...ux-pingi.de, davem@...emloft.net,
	gigaset307x-common@...ts.sourceforge.net,
	LKML <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	syzkaller <syzkaller@...glegroups.com>
Subject: Re: gigaset: freeing an active object

On ma, 2015-11-30 at 19:30 +0100, Tilman Schmidt wrote:
> I wonder how that will behave if someone attaches two of the devices to
> different serial ports. Not likely, but not forbidden either.

I see.

Perhaps I should respin and a use a pointer to a struct platform_device
in struct ser_cardstate, use the two step approach of
platform_device_alloc() and friends, etc. Only slightly more
complicated.

How would attaching two devices work with GIGASET_MINORS hardcoded to 1?
Because I haven't yet stumbled on the mechanism with which ttyGS1 (and
up) would then be created.

(I do have a second M105's in a box somewhere, so I could check myself
what happens when a second USB device is added, for what that's worth.)

Thanks,


Paul Bolle
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