Date: Sun, 15 May 2011 09:32:57 -0700
From: Greg KH <greg@kroah.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: Par-Gunnar Hjalmdahl <par-gunnar.p.hjalmdahl@stericsson.com>,
        devel@driverdev.osuosl.org,
        Mathieu Poirier <mathieu.poirier@linaro.org>,
        Par-Gunnar Hjalmdahl <pghatwork@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>, Vitaly Wool <vitalywool@gmail.com>,
        Marcel Holtmann <marcel@holtmann.org>,
        Greg Kroah-Hartman <gregkh@suse.de>, linux-kernel@vger.kernel.org,
        Lukasz Rymanowski <Lukasz.Rymanowski@tieto.com>,
        linux-bluetooth@vger.kernel.org, Pavan Savoy <pavan_savoy@sify.com>,
        Lee Jones <lee.jones@linaro.org>, Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [PATCH v6] Add ST-Ericsson CG2900 driver
Message-ID: <20110515163257.GE1315@kroah.com>
References: <1305040215-712-1-git-send-email-par-gunnar.p.hjalmdahl@stericsson.com>
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On Sun, May 15, 2011 at 12:20:51PM +0200, Linus Walleij wrote:
> 2011/5/10 Par-Gunnar Hjalmdahl <par-gunnar.p.hjalmdahl@stericsson.com>:
> 
> > Patch created on next-20110510.
> > Compared to v5 this patch has the following update:
> > ?- Updated driver after changes to MFD interfaces in linux-next (from mfd_data
> > ? to platform_data).
> > ?- Changed platform specific file dependencies (included correct nomadik file).
> 
> Sorry I don't know if all this will work, it's due to all the churn created by
> the current push to get stuff out of the ARM tree so not much to do.
> 
> The Nomadik GPIO file was moved in next but I will take that code move
> out today, because the GPIO maintainer has told me he couldn't
> provide feedback on these patches in time for me to finalize the change
> for kernel 2.6.40. Thus it won't go into 2.6.40 and I must remove it
> from next.
> 
> The MFD changes will *probably* happen, if you're thinking about the
> PRCMU movement etc.
> 
> To merge into the staging tree right now, you need to base it off
> Gregs staging tree, which is where it'll be merged:
> http://git.kernel.org/?p=linux/kernel/git/gregkh/staging-2.6.git;a=summary
> 
> Sorry about all the confusion, I think it's actually nobodys fault,
> it's just reflecting the fact that embedded drivers with deep
> platform dependencies are *really* *hard* to manage in staging.

That's why you should only use staging as a last resort, not as your
primary way of getting code into the kernel, especially for stuff with
a constantly changing in-kernel interface like you have pointed out
here.

Just do the "real work" first and get it merged the real way if at all
possible.

best of luck,

greg k-h
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