Re: [PATCH net-next 3/3] net: dpaa_eth: extract hash using __be32 pointer in rx_default_dqrr()

[Christophe Leroy <christophe.leroy@csgroup.eu>]

Le 29/10/2024 à 17:43, Vladimir Oltean a écrit :
> Sparse provides the following output:
> 
> warning: cast to restricted __be32
> 
> This is a harmless warning due to the fact that we dereference the hash
> stored in the FD using an incorrect type annotation. Suppress the
> warning by using the correct __be32 type instead of u32. No functional
> change.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>

Acked-by: Christophe Leroy <christophe.leroy@csgroup.eu>

> ---
>   drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> index e280013afa63..bf5baef5c3e0 100644
> --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
> @@ -2772,7 +2772,7 @@ static enum qman_cb_dqrr_result rx_default_dqrr(struct qman_portal *portal,
>   	if (net_dev->features & NETIF_F_RXHASH && priv->keygen_in_use &&
>   	    !fman_port_get_hash_result_offset(priv->mac_dev->port[RX],
>   					      &hash_offset)) {
> -		hash = be32_to_cpu(*(u32 *)(vaddr + hash_offset));
> +		hash = be32_to_cpu(*(__be32 *)(vaddr + hash_offset));
>   		hash_valid = true;
>   	}
>