Re: [net-next, PATCH] net: stmmac: use correct define to get rx timestamp on GMAC4

Jose Abreu
2019-02-14T14:19:46Z

Hi Alexandre,

On 2/14/2019 2:12 PM, Alexandre Torgue wrote:
> In dwmac4_wrback_get_rx_timestamp_status we looking for a RX timestamp.
> For that receive descriptors are handled and so we should use defines
> related to receive descriptors. It'll no change the functional behavior
> as RDES3_RDES1_VALID=TDES3_RS1V=BIT(26) but it makes code easier to read.
>
> Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
> index 20299f6..9f062b3 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
> @@ -268,7 +268,7 @@ static int dwmac4_wrback_get_rx_timestamp_status(void *desc, void *next_desc,
> int ret = -EINVAL;
>
> /* Get the status from normal w/b descriptor */
> - if (likely(p->des3 & TDES3_RS1V)) {
> + if (likely(p->des3 & RDES3_RDES1_VALID)) {

Shouldn't this also use le32_to_cpu() like bellow ?

Thanks,
Jose Miguel Abreu

> if (likely(le32_to_cpu(p->des1) & RDES1_TIMESTAMP_AVAILABLE)) {
> int i = 0;