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

Wolfram Sang wsa at the-dreams.de
Sat Sep 2 14:58:30 PDT 2017


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

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-mediatek/attachments/20170902/e27fa1a7/attachment.sig>


More information about the Linux-mediatek mailing list