[PATCH v1 2/2] i2c: microchip: fix erroneous late ack send

[Heiko Schocher]

Hello Conor,

On 26.10.22 09:49, Conor Dooley wrote:
> A late ack is currently being sent at the end of a transfer due to
> incorrect logic in mchp_corei2c_empty_rx(). Currently the Assert Ack
> bit is being written to the controller's control reg after the last
> byte has been received, causing it to sent another byte with the ack.
> Instead, the AA flag should be written to the control register when
> the penultimate byte is read so it is sent out for the last byte.
> 
> Reported-by: Andreas Buerkler <andreas.buerkler at enclustra.com>
> Fixes: 0dc0d1e094 ("i2c: Add Microchip PolarFire SoC I2C driver")
> Fixes: 0190d48488 ("i2c: microchip: fix ack sending logic")
> Signed-off-by: Conor Dooley <conor.dooley at microchip.com>
> ---
>  drivers/i2c/i2c-microchip.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)


Thanks!

Reviewed-by: Heiko Schocher <hs at denx.de>

bye,
Heiko
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