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Date:   Thu, 5 Sep 2019 15:43:38 +0200
From:   Wolfram Sang <wsa@the-dreams.de>
To:     Lee Jones <lee.jones@linaro.org>
Cc:     alokc@codeaurora.org, agross@kernel.org, robh+dt@kernel.org,
        mark.rutland@arm.com, bjorn.andersson@linaro.org,
        linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        devicetree@vger.kernel.org, vkoul@kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] i2c: qcom-geni: Provide an option to disable DMA
 processing
Message-ID: <20190905134338.GF1157@kunai>
References: <20190905075213.13260-1-lee.jones@linaro.org>
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 <20190905091800.GD1157@kunai>
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On Thu, Sep 05, 2019 at 10:28:16AM +0100, Lee Jones wrote:
> On Thu, 05 Sep 2019, Wolfram Sang wrote:
>=20
> >=20
> > > Fixes: 8bc529b25354 ("soc: qcom: geni: Add support for ACPI")
> >=20
> > Are you sure? From visual inspection, I don't see a correlation between
> > this commit and the fix here.
>=20
> This patch should have been part of the commit, or at the very least,
> part of the set, alluded to above.  Unfortunately, I was carrying
> Bjorn's hack which simply returned early from geni_se_rx_dma_prep()
> with an error, so it masked the issue.

I still don't see why this basic ACPI enabling code (not touching DMA
but only clocks and pinctrl) causes and additional handling for DMA. Am
I overlooking something obvious?


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