[PATCH v4 1/2] i2c: aspeed: Handle the coalesced stop conditions with the start conditions.

Andi Shyti andi.shyti at kernel.org
Fri Dec 15 12:42:48 AEDT 2023


Hi Quan,

On Mon, Dec 11, 2023 at 05:22:16PM +0700, Quan Nguyen wrote:
> Some masters may drive the transfers with low enough latency between
> the nak/stop phase of the current command and the start/address phase
> of the following command that the interrupts are coalesced by the
> time we process them.
> Handle the stop conditions before processing SLAVE_MATCH to fix the
> complaints that sometimes occur below.
> 
> "aspeed-i2c-bus 1e78a040.i2c-bus: irq handled != irq. Expected
> 0x00000086, but was 0x00000084"
> 
> Fixes: f9eb91350bb2 ("i2c: aspeed: added slave support for Aspeed I2C driver")
> Signed-off-by: Quan Nguyen <quan at os.amperecomputing.com>
> Reviewed-by: Andrew Jeffery <andrew at codeconstruct.com.au>
> Reviewed-by: Andi Shyti <andi.shyti at kernel.org>
> ---
> v4:
>   + Add an extra empty line before the comment                        [Andrew]
> 
> Note: I'd like to keep adding Reviewed-by Andrew and Andi for this patch
> eventhough there is an extra empty line added before the comment as mentioned
> above. Thanks for the review.

that's OK and you should. You would remove the r-b/a-b only if
you do some major changes. Besides, this change was asked both by
me and Andrew.

Thanks,
Andi


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