linux-kernel - Re: [PATCH v2] Input: elants_i2c - Use DMA safe i2c when possible

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Message-ID: <20181011072953.ddkemhnntjisli3q@katana>
Date:   Thu, 11 Oct 2018 09:29:53 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: Re: [PATCH v2] Input: elants_i2c - Use DMA safe i2c when possible

On Wed, Oct 10, 2018 at 01:00:17PM -0700, Stephen Boyd wrote:
> This irq handler is always reading bytes from the device into a
> kmalloced buffer, so it's safe to mark this transaction as DMA safe.
> This avoids bouncing the buffer when an i2c controller decides to use
> DMA for a transaction.
> 
> Cc: Wolfram Sang <wsa@...-dreams.de>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>

For the record:

Acked-by: Wolfram Sang <wsa@...-dreams.de>


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