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

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Message-ID: <pj41zllfjebsil.fsf@ua97a68a4e7db56.ant.amazon.com>
Date:   Mon, 20 Jul 2020 09:38:26 +0300
From:   Shay Agroskin <shayagr@...zon.com>
To:     Joe Perches <joe@...ches.com>
CC:     Wang Hai <wanghai38@...wei.com>, <gtzalik@...zon.com>,
        <saeedb@...zon.com>, <zorik@...zon.com>, <davem@...emloft.net>,
        <kuba@...nel.org>, <sameehj@...zon.com>, <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


Joe Perches <joe@...ches.com> writes:

> 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...);

Yup, missed that myself. Wang, if you don't mind please apply 
Joe's change as well.

Thanks, Shay