netdev - Re: [PATCH net-next v2] net: ena: Fix using plain integer as NULL pointer in ena_init_napi_in

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Date:   Sun, 19 Jul 2020 20:15:41 -0700
From:   Joe Perches <joe@...ches.com>
To:     Wang Hai <wanghai38@...wei.com>, gtzalik@...zon.com,
        saeedb@...zon.com, zorik@...zon.com, davem@...emloft.net,
        kuba@...nel.org, sameehj@...zon.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2] net: ena: Fix using plain integer as NULL
 pointer in ena_init_napi_in_range

On Mon, 2020-07-20 at 10:53 +0800, Wang Hai wrote:
> Fix sparse build warning:
> 
> drivers/net/ethernet/amazon/ena/ena_netdev.c:2193:34: warning:
>  Using plain integer as NULL pointer
[]
> diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c
[]
> @@ -2190,11 +2190,10 @@ static void ena_del_napi_in_range(struct ena_adapter *adapter,
>  static void ena_init_napi_in_range(struct ena_adapter *adapter,
>  				   int first_index, int count)
>  {
> -	struct ena_napi *napi = {0};
>  	int i;
>  
>  	for (i = first_index; i < first_index + count; i++) {
> -		napi = &adapter->ena_napi[i];
> +		struct ena_napi *napi = &adapter->ena_napi[i];
>  
>  		netif_napi_add(adapter->netdev,
>  			       &adapter->ena_napi[i].napi,

Another possible change is to this statement:

 		netif_napi_add(adapter->netdev,
			       &napi->napi,
			       etc...);