linux-kernel - Re: [PATCH v4 2/2] MIPS: io: add a barrier after register read in readX()

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Message-ID: <d1f91bcc-4523-e8fb-2f16-4a5932460d44@codeaurora.org>
Date:   Thu, 12 Apr 2018 22:33:42 -0400
From:   Sinan Kaya <okaya@...eaurora.org>
To:     linux-mips@...ux-mips.org, arnd@...db.de, timur@...eaurora.org,
        sulrich@...eaurora.org
Cc:     linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Ralf Baechle <ralf@...ux-mips.org>,
        James Hogan <jhogan@...nel.org>,
        Paul Burton <paul.burton@...s.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/2] MIPS: io: add a barrier after register read in
 readX()

On 4/12/2018 10:30 PM, Sinan Kaya wrote:
> +	/* prevent prefetching of coherent DMA dma prematurely */	\

I tried to write DMA data but my keyboard is not cooperating. I'll hold onto
posting another version until I hear back from you for wmb().

-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.