Re: [Question] When should a driver issue STOP condition?

[Wolfram Sang]

> The problem is, my driver is forcibly setting
> STOP condition unless the next message is read.

This likely is a problem.

In Linux I2C terminology, a transfer is everything between a START and a
STOP. A transfer may consist of multiple messages, connected with
REP_START [1].

So, a STOP should be generated after the last message of a transfer or
of I2C_M_STOP is set in a message. The latter should be super-rare
because mostly you should be able to use multiple transfers with a
regular STOP instead.

[1] Slide 8 illustrates this:
http://events17.linuxfoundation.org/sites/events/files/slides/ELCE17-WSang-I2C-Fault-Injector.pdf

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