netdev - Re: [PATCH net v4] net: lan966x: fix parameter check in two functions

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Date: Tue, 18 Jul 2023 17:52:38 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Minjie Du <duminjie@...o.com>
Cc: Horatiu Vultur <horatiu.vultur@...rochip.com>,
 UNGLinuxDriver@...rochip.com (maintainer:MICROCHIP LAN966X ETHERNET
 DRIVER), "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Richard Cochran
 <richardcochran@...il.com>, netdev@...r.kernel.org (open list:MICROCHIP
 LAN966X ETHERNET DRIVER), linux-kernel@...r.kernel.org (open list),
 opensource.kernel@...o.com, Simon Horman <simon.horman@...igine.com>
Subject: Re: [PATCH net v4] net: lan966x: fix parameter check in two
 functions

On Mon, 17 Jul 2023 10:22:35 +0800 Minjie Du wrote:
>  	vrule = vcap_get_rule(lan966x->vcap_ctrl, rule_id);
> -	if (vrule) {
> +	if (!IS_ERR_OR_NULL(vrule)) {

Please make vcap_get_rule() return an error pointer rather than NULL.
Mixing the two is a common source of errors.
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