linux-kernel - Re: [PATCH, RESEND] scsi: lpfc: fix linking against modular NVMe support

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Message-ID: <20170726091830.GI4039@linux-x5ow.site>
Date:   Wed, 26 Jul 2017 11:18:30 +0200
From:   Johannes Thumshirn <jthumshirn@...e.de>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "# 3.4.x" <stable@...r.kernel.org>, Hannes Reinecke <hare@...e.de>,
        Finn Thain <fthain@...egraphics.com.au>,
        James Smart <jsmart2021@...il.com>,
        linux-scsi <linux-scsi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH, RESEND] scsi: lpfc: fix linking against modular NVMe
 support

On Wed, Jul 26, 2017 at 11:16:10AM +0200, Arnd Bergmann wrote:
> We use this construct in many places these days. A few years ago I added
> a comment whenever I added an instance, but most others don't so I treat
> it as an idiom now.
> 
> "depends on X" means that if X=m, the current symbol can only be "m" or
> "n", while "X=y" means it can have any value.
> 
> So for "depends on X || X=n", the current symbol cannot be "y" when "X=m",
> but otherwise can have any of the three possibilities. This is exactly what
> we need here.

Obvious o.O

-- 
Johannes Thumshirn                                          Storage
jthumshirn@...e.de                                +49 911 74053 689
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