From: Stephen Boyd <swboyd@chromium.org>
To: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-arm-msm@vger.kernel.org,
Karthikeyan Ramasubramanian <kramasub@codeaurora.org>,
Sagar Dharia <sdharia@codeaurora.org>,
Girish Mahadevan <girishm@codeaurora.org>
Subject: Re: [PATCH] i2c: i2c-qcom-geni: Properly handle DMA safe buffers
Date: Wed, 19 Sep 2018 22:14:48 -0700 [thread overview]
Message-ID: <153742048814.119890.14655726482695872149@swboyd.mtv.corp.google.com> (raw)
In-Reply-To: <20180919204527.GA889@kunai>
Quoting Wolfram Sang (2018-09-19 13:45:28)
>
> > But now when I try to use it I'm not exicted when the buffer is bounced
> > but we fail to map the buffer with the DMA APIs. For an I2C_M_RD
>
> Yes, this was reported before and the function to unmap looks different
> now as of v4.19-rc2...
>
> > the buffer that we setup. Or we can pass an argument to
> > i2c_release_dma_safe_msg_buf() to indicate if we should do the memcpy or
> > not?
>
> ... exactly like this :)
>
Ok great. I haven't synced to the latest stuff. I'll resend this
tomorrow when I test again.
prev parent reply other threads:[~2018-09-20 5:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-18 19:41 [PATCH] i2c: i2c-qcom-geni: Properly handle DMA safe buffers Stephen Boyd
2018-09-18 22:16 ` Wolfram Sang
2018-09-19 18:25 ` Stephen Boyd
2018-09-19 20:45 ` Wolfram Sang
2018-09-20 5:14 ` Stephen Boyd [this message]
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