Re: [PATCH V11 1/2] i2c: i2c-qcom-geni: Add shutdown callback for i2c

[Wolfram Sang]

On Tue, May 25, 2021 at 06:40:50PM +0530, Roja Rani Yarubandi wrote:
> If the hardware is still accessing memory after SMMU translation
> is disabled (as part of smmu shutdown callback), then the
> IOVAs (I/O virtual address) which it was using will go on the bus
> as the physical addresses which will result in unknown crashes
> like NoC/interconnect errors.
> 
> So, implement shutdown callback for i2c driver to suspend the bus
> during system "reboot" or "shutdown".
> 
> Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller")
> Signed-off-by: Roja Rani Yarubandi <rojay@xxxxxxxxxxxxxx>

Do we need patch 1 after patch 2 was applied? I always thought all
devices are suspended before shutdown/reboot?

Nice to see that 'mark_adapter_suspended' becomes useful again!

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