Re: [I2C] About warning 'DMA-API: device driver maps memory from stack'

From	Wolfram Sang <wsa@the-dreams.de>
Newsgroups	linux.kernel
Subject	Re: [I2C] About warning 'DMA-API: device driver maps memory from stack'
Date	2017-09-03 00:00 +0200
Message-ID	<uloCl-8cB-3@gated-at.bofh.it> (permalink)
References	<ulfpo-2MF-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi,

nice to see someone else interested in the I2C & DMA topic.

Please check this series which I sent out recently:

"[RFC PATCH v4 0/6] i2c: document DMA handling and add helpers for it"

In that series, I proposed...

> 3. kmalloc data buffer instead of local variables buf in function
> i2c_smbus_xfer_emulated(...)

... this solution. Although I have to check Mauro's general response to
the series first. I'd be interested in what you think of the series,
too.

Kind regards,

   Wolfram

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[I2C] About warning 'DMA-API: device driver maps memory from stack' Jun Gao <jun.gao@mediatek.com> - 2017-09-02 14:10 +0200
  Re: [I2C] About warning 'DMA-API: device driver maps memory from  stack' Wolfram Sang <wsa@the-dreams.de> - 2017-09-03 00:00 +0200

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