From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Luis R. Rodriguez" <mcgrof@suse.com>
Subject: Re: [PATCH v1 5/5] driver-core: add driver asynchronous probe
	support
Date: Tue, 30 Sep 2014 09:21:59 +0200
Message-ID: <20140930072159.GC14081@wotan.suse.de>
References: <1411768637-6809-1-git-send-email-mcgrof@do-not-panic.com> <1411768637-6809-6-git-send-email-mcgrof@do-not-panic.com> <20140928150329.GC5023@mtj.dyndns.org> <20140929212208.GV17349@wotan.suse.de> <20140929212601.GF15925@htj.dyndns.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Return-path: <linux-kernel-owner@vger.kernel.org>
Content-Disposition: inline
In-Reply-To: <20140929212601.GF15925@htj.dyndns.org>
Sender: linux-kernel-owner@vger.kernel.org
To: Tejun Heo <tj@kernel.org>
Cc: gregkh@linuxfoundation.org, "Luis R. Rodriguez" <mcgrof@do-not-panic.com>, dmitry.torokhov@gmail.com, tiwai@suse.de, arjan@linux.intel.com, teg@jklm.no, rmilasan@suse.com, werner@suse.com, oleg@redhat.com, hare@suse.com, bpoirier@suse.de, santosh@chelsio.com, pmladek@suse.cz, dbueso@suse.com, linux-kernel@vger.kernel.org, Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>, Joseph Salisbury <joseph.salisbury@canonical.com>, Kay Sievers <kay@vrfy.org>, One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>, Tim Gardner <tim.gardner@canonical.com>, Pierre Fersing <pierre-fersing@pierref.org>, Andrew Morton <akpm@linux-foundation.org>, Nagalakshmi Nandigama <nagalakshmi.nandigama@avagotech.com>, Praveen Krishnamoorthy <praveen.krishnamoorthy@avagotech.com>, Sreekanth Reddy <sreekanth.reddy@avagotech.com>, Abhijit Mahajan <abhijit.mahajan@avagotech.com>, Casey Leedom <leedom@che>
List-Id: linux-scsi@vger.kernel.org

On Mon, Sep 29, 2014 at 05:26:01PM -0400, Tejun Heo wrote:
> Hello, Luis.
> 
> On Mon, Sep 29, 2014 at 11:22:08PM +0200, Luis R. Rodriguez wrote:
> > > > +	/* For now lets avoid stupid bug reports */
> > > > +	if (!strcmp(bus->name, "pci") ||
> > > > +	    !strcmp(bus->name, "pci_express") ||
> > > > +	    !strcmp(bus->name, "hid") ||
> > > > +	    !strcmp(bus->name, "sdio") ||
> > > > +	    !strcmp(bus->name, "gameport") ||
> > > > +	    !strcmp(bus->name, "mmc") ||
> > > > +	    !strcmp(bus->name, "i2c") ||
> > > > +	    !strcmp(bus->name, "platform") ||
> > > > +	    !strcmp(bus->name, "usb"))
> > > > +		return true;
> > > 
> > > Ugh... things like this tend to become permanent.  Do we really need
> > > this?  And how are we gonna find out what's broken why w/o bug
> > > reports?
> > 
> > Yeah... well we have two options, one is have something like this to
> > at least make it generally useful or remove this and let folks who
> > care start fixing async for all modules. The downside to removing
> > this is it makes async probe pretty much useless on most systems
> > right now, it would mean systemd would have to probably consider
> > the list above if they wanted to start using this without expecting
> > systems to not work.
> 
> So, I'd much prefer blacklist approach if something like this is a
> necessity.  That way, we'd at least know what doesn't work.

For buses? Or do you mean you'd want to wait until we have a decent
list of drivers with the sync probe flag set? If the later it may take
a while to get that list for this to be somewhat useful.

  Luis