[PATCH v2] i2c: exynos5: Preserve high speed master code

[Krzysztof Kozlowski]

On Tue, Feb 16, 2021 at 11:25:38PM +0100, Mårten Lindahl wrote:
> From: Mårten Lindahl <martenli at axis.com>
> 
> When the driver starts to send a message with the MASTER_ID field
> set (high speed), the whole I2C_ADDR register is overwritten including
> MASTER_ID as the SLV_ADDR_MAS field is set.
> 
> This patch preserves already written fields in I2C_ADDR when writing
> SLV_ADDR_MAS.
> 
> Signed-off-by: Mårten Lindahl <martenli at axis.com>
> ---
> v2:
> - Change commit message as the problem is not in the controller but in
>   the driver.
> - Use MASTER_ID macro instead of reading back register contents.
> 
>  drivers/i2c/busses/i2c-exynos5.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 

Reviewed-by: Krzysztof Kozlowski <krzk at kernel.org>
Tested-by: Krzysztof Kozlowski <krzk at kernel.org>

Best regards,
Krzysztof