Re: [PATCH v3 06/13] hw/i2c/ppc4xx_i2c: Replace i2c_send_recv() by i2c_recv() & i2c_send()

[Corey Minyard]

On Wed, Jun 16, 2021 at 06:14:11PM +0200, Philippe Mathieu-Daudé wrote:
> Instead of using the confuse i2c_send_recv(), rewrite to directly
> call i2c_recv() & i2c_send(), resulting in code easire to review.
> 
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  hw/i2c/ppc4xx_i2c.c | 13 ++++++++-----
>  1 file changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/i2c/ppc4xx_i2c.c b/hw/i2c/ppc4xx_i2c.c
> index f4c5bc12d36..b3d3da56e38 100644
> --- a/hw/i2c/ppc4xx_i2c.c
> +++ b/hw/i2c/ppc4xx_i2c.c
> @@ -240,11 +240,14 @@ static void ppc4xx_i2c_writeb(void *opaque, hwaddr 
> addr, uint64_t value,
>                          i2c->sts &= ~IIC_STS_ERR;
>                      }
>                  }
> -                if (!(i2c->sts & IIC_STS_ERR) &&
> -                    i2c_send_recv(i2c->bus, &i2c->mdata[i], !recv)) {
> -                    i2c->sts |= IIC_STS_ERR;
> -                    i2c->extsts |= IIC_EXTSTS_XFRA;
> -                    break;
> +                if (!(i2c->sts & IIC_STS_ERR)) {
> +                    if (recv) {
> +                        i2c->mdata[i] = i2c_recv(i2c->bus);
> +                    } else if (i2c_send(i2c->bus, i2c->mdata[i])) {

In the previous patch you checked < 0, it would be nice to be
consistent.

-corey

> +                        i2c->sts |= IIC_STS_ERR;
> +                        i2c->extsts |= IIC_EXTSTS_XFRA;
> +                        break;
> +                    }
>                  }
>                  if (value & IIC_CNTL_RPST || !(value & IIC_CNTL_CHT)) {
>                      i2c_end_transfer(i2c->bus);
> -- 
> 2.31.1
>