From: Wolfram Sang <wsa@the-dreams.de>
To: Stephen Boyd <swboyd@chromium.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
linux-kernel@vger.kernel.org, linux-input@vger.kernel.org
Subject: Re: [PATCH v2] Input: elants_i2c - Use DMA safe i2c when possible
Date: Thu, 11 Oct 2018 09:29:53 +0200 [thread overview]
Message-ID: <20181011072953.ddkemhnntjisli3q@katana> (raw)
In-Reply-To: <20181010200017.255874-1-swboyd@chromium.org>
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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@the-dreams.de>
> Signed-off-by: Stephen Boyd <swboyd@chromium.org>
For the record:
Acked-by: Wolfram Sang <wsa@the-dreams.de>
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prev parent reply other threads:[~2018-10-11 7:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-10 20:00 [PATCH v2] Input: elants_i2c - Use DMA safe i2c when possible Stephen Boyd
2018-10-11 0:11 ` Dmitry Torokhov
2018-10-11 7:29 ` Wolfram Sang [this message]
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