I think it is the same issue. How would i2c_transfer_noirq work? In my
case another task was in the middle of a transaction when it was
"stopped". This means not only do you need i2c_transfer_noirq, but also
need to flush the bus before calling kernel_shutdown_prepare().
On 03/04/2017 04:32 PM, Wolfram Sang wrote:
issue with i2c since other drivers have the same design. What I don't
have is clear understanding of if/when/how i2c_transfer() can be called
post kernel_power_off().
Not sure if it is exactly the same issue, but last year we concluded
that we probably need an optional i2c_transfer_noirq callback in
i2c_adapter to talk to PMICs very late or very early. No work has been
done so far, though. I hope I will find time for it this year.
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