linux-kernel - Re: [PATCH] scsi: ipr: fix build on 32-bit architectures

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Message-ID: <yq18t7itxqb.fsf@oracle.com>
Date:   Wed, 13 Jun 2018 13:14:36 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Brian King <brking@...ibm.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Kees Cook <keescook@...omium.org>,
        Hannes Reinecke <hare@...e.com>,
        Souptick Joarder <jrdr.linux@...il.com>,
        Wen Xiong <wenxiong@...ux.vnet.ibm.com>,
        Sinan Kaya <okaya@...eaurora.org>,
        Bart Van Assche <bart.vanassche@....com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: ipr: fix build on 32-bit architectures


Arnd,

> the conclusion was that drivers should generally assume that the
> barrier implied by writel() is sufficient for ordering DMA, so this
> reverts his change and instead removes the extraneous wmb() before it,
> which is no longer needed on any architecture now.

Applied to 4.18/scsi-fixes and squashed with Sinan's patch.

-- 
Martin K. Petersen	Oracle Linux Engineering