linux-kernel - Re: [PATCH 02/14] soundwire: Add SoundWire bus type

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Message-ID: <20171027085739.GA28825@kroah.com>
Date:   Fri, 27 Oct 2017 10:57:39 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Vinod Koul <vinod.koul@...el.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        ALSA <alsa-devel@...a-project.org>, Mark <broonie@...nel.org>,
        Takashi <tiwai@...e.de>,
        Pierre <pierre-louis.bossart@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Shreyas NC <shreyas.nc@...el.com>, patches.audio@...el.com,
        alan@...ux.intel.com,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Sagar Dharia <sdharia@...eaurora.org>,
        srinivas.kandagatla@...aro.org, plai@...eaurora.org,
        Sudheer Papothi <spapothi@...eaurora.org>
Subject: Re: [PATCH 02/14] soundwire: Add SoundWire bus type

On Thu, Oct 26, 2017 at 02:03:42PM +0530, Vinod Koul wrote:
> On Fri, Oct 20, 2017 at 09:31:34PM +0530, Vinod Koul wrote:
> > On Fri, Oct 20, 2017 at 12:45:28PM +0200, Greg Kroah-Hartman wrote:
> > > On Thu, Oct 19, 2017 at 08:33:18AM +0530, Vinod Koul wrote:
> 
> > > > +struct bus_type sdw_bus_type = {
> > > > +	.name = "soundwire",
> > > > +	.match = sdw_bus_match,
> > > > +	.uevent = sdw_uevent,
> > > > +};
> > > > +EXPORT_SYMBOL(sdw_bus_type);
> > > 
> > > No release callback?  Who frees the device?
> 
> Hmmm, bus_type doesn't seem to have a release callback. The sdw_device has
> release and that is added in the next patch. So I am not changing anything
> here. Let me know If I missed anything...

Ok, as long as you really have a release callback for when the device
goes away, and you have tested device removal...