linux-kernel - Re: [PATCH 2/4] ALSA: hdac: drop unused dev_to

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Message-ID: <20160104145421.GA16267@bogon>
Date:	Mon, 4 Jan 2016 22:54:22 +0800
From:	Geliang Tang <geliangtang@....com>
To:	Vinod Koul <vinod.koul@...el.com>
Cc:	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	Geliang Tang <geliangtang@....com>
Subject: Re: [PATCH 2/4] ALSA: hdac: drop unused dev_to_hdac macro

On Mon, Jan 04, 2016 at 01:53:47PM +0530, Vinod Koul wrote:
> On Mon, Dec 28, 2015 at 10:47:11PM +0800, Geliang Tang wrote:
> > dev_to_hdac is not used anymore so drop it.
> 
> No harm in keeping this for now as the systems using these will be coming
> up and more users will be upstreamed...
> 

Thanks for your review. Sorry that I didn't make myself clear in the commit
log. What I droped is a repetitive macro. dev_to_hdac() in hdac_ext_bus.c 
and dev_to_hdac_dev() in hdaudio.h are the same:

 include/sound/hdaudio.h:
 #define dev_to_hdac_dev(_dev)   container_of(_dev, struct hdac_device, dev)

 sound/hda/ext/hdac_ext_bus.c:
 #define dev_to_hdac(dev) (container_of((dev), \
                         struct hdac_device, dev))

Users should use dev_to_hdac_dev() in hdaudio.h, not dev_to_hdac().

 -Geliang

> > 
> > Signed-off-by: Geliang Tang <geliangtang@....com>
> > ---
> >  sound/hda/ext/hdac_ext_bus.c | 2 --
> >  1 file changed, 2 deletions(-)
> > 
> > diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c
> > index 2433f7c..58f6b98 100644
> > --- a/sound/hda/ext/hdac_ext_bus.c
> > +++ b/sound/hda/ext/hdac_ext_bus.c
> > @@ -197,8 +197,6 @@ void snd_hdac_ext_bus_device_remove(struct hdac_ext_bus *ebus)
> >  	}
> >  }
> >  EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_remove);
> > -#define dev_to_hdac(dev) (container_of((dev), \
> > -			struct hdac_device, dev))
> >  
> >  static inline struct hdac_ext_driver *get_edrv(struct device *dev)
> >  {
> > -- 
> > 2.5.0

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