Re: [PATCH] mmc: tegra: Mark 64 bit dma broken on Tegra186

From	Thierry Reding <thierry.reding@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH] mmc: tegra: Mark 64 bit dma broken on Tegra186
Date	2017-09-09 00:10 +0200
Message-ID	<unzDj-4FX-13@gated-at.bofh.it> (permalink)
References	<unxBw-3aB-19@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Fri, Sep 08, 2017 at 12:48:33PM -0700, Krishna Reddy wrote:
> SDHCI controllers on Tegra186 support 40 bit addressing.
> IOVA addresses are 48-bit wide on Tegra186.
> SDHCI host common code sets dma mask as either 32-bit or 64-bit.
> To avoid access issues when SMMU is enabled, disable 64-bit dma.
> 
> Signed-off-by: Krishna Reddy <vdumpa@nvidia.com>
> ---
>  drivers/mmc/host/sdhci-tegra.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)

This matches a local commit:

Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>

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[PATCH] mmc: tegra: Mark 64 bit dma broken on Tegra186 Krishna Reddy <vdumpa@nvidia.com> - 2017-09-08 22:00 +0200
  Re: [PATCH] mmc: tegra: Mark 64 bit dma broken on Tegra186 Thierry Reding <thierry.reding@gmail.com> - 2017-09-09 00:10 +0200

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