i2c: add a message flag for DMA safe buffers

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I2C has no requirement that the buffer of a message needs to be DMA
safe. In case it is, it can now be flagged, so drivers wishing to
do DMA can use the buffer directly.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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Wolfram Sang 2017-11-04 21:20:01 +01:00 • committed by Wolfram Sang

parent 14911c6f48

commit 521a72e1f2

1 changed files with 3 additions and 0 deletions

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include/uapi/linux/i2c.h

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