[U-Boot] [PATCH 2/2] x86: ich-spi: Clear atomic preop only when SPI settings are not locked

[Stefan Roese]

On 27.08.2017 04:22, Bin Meng wrote:
> The atomic preop register can only be written when SPI settings are
> not locked, otherwise it's read-only.
> 
> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
> ---
> 
>   drivers/spi/ich.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c
> index 5a3d690..22fc83d 100644
> --- a/drivers/spi/ich.c
> +++ b/drivers/spi/ich.c
> @@ -563,7 +563,8 @@ static int ich_spi_xfer(struct udevice *dev, unsigned int bitlen,
>   	}
>   
>   	/* Clear atomic preop now that xfer is done */
> -	ich_writew(ctlr, 0, ctlr->preop);
> +	if (!lock)
> +		ich_writew(ctlr, 0, ctlr->preop);
>   
>   	return 0;
>   }
> 

Reviewed-by: Stefan Roese <sr at denx.de>

Thanks,
Stefan