linux-kernel - Re: [PATCH] i2c: drop ancient protection against sysfs refcounting issues

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Message-ID: <20150119213050.GA32176@katana>
Date:	Mon, 19 Jan 2015 22:30:50 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linuxppc-dev@...ts.ozlabs.org, linux-mips@...ux-mips.org,
	Jean Delvare <jdelvare@...e.de>,
	Julia Lawall <julia.lawall@...6.fr>,
	Pantelis Antoniou <pantelis.antoniou@...sulko.com>
Subject: Re: [PATCH] i2c: drop ancient protection against sysfs refcounting
 issues

> > @@ -1184,8 +1183,7 @@ EXPORT_SYMBOL_GPL(i2c_new_dummy);
> >  
> >  static void i2c_adapter_dev_release(struct device *dev)
> >  {
> > -	struct i2c_adapter *adap = to_i2c_adapter(dev);
> > -	complete(&adap->dev_released);
> > +	/* empty, but the driver core insists we need a release function */
> 
> Yeah, it does, but I hate to see this in "real" code as something is
> probably wrong with it if it happens.
> 
> Please move the rest of 'i2c_del_adapter' into the release function
> (what was after the wait_for_completion() call), and then all should be
> fine.

I was about to do this as a follow-up patch. But Russell's and
Lars-Peter's responses made this obsolete already.


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