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Miller" , Jakub Kicinski , Jiri Pirko , , References: <1600063682-17313-1-git-send-email-moshe@mellanox.com> <1600063682-17313-2-git-send-email-moshe@mellanox.com> <20200914122732.GE2236@nanopsycho.orion> <996866b1-5472-dd95-f415-85c34c4d01c0@nvidia.com> <20200915132614.GN2236@nanopsycho.orion> From: Moshe Shemesh Message-ID: Date: Tue, 15 Sep 2020 23:06:16 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: <20200915132614.GN2236@nanopsycho.orion> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL105.nvidia.com (172.20.187.12) To HQMAIL107.nvidia.com (172.20.187.13) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1600200378; bh=Lm81+AojpWyUlTb+BaNAF9XupWRNESqPe0U1Q1CgUr8=; h=X-PGP-Universal:Subject:To:CC:References:From:Message-ID:Date: User-Agent:MIME-Version:In-Reply-To:Content-Type: Content-Transfer-Encoding:Content-Language:X-Originating-IP: X-ClientProxiedBy; b=FJa71lPrXTERv9ih7d4QbPrTAOkE7TyRa8i+iOzPRTmDzkAu08K+2OnK5Aet3sXgS hMj628IVIsnsWw95WjzMqbF1xfZUxojeUM2eqNQCT17l8XpE20PAmhO6D/uWzisty6 3sJPvFsOjvOpSGlp6qOgm4EcpiNLAjQh+YkuYic25MGVD1ZF3vz57DrjfqUCWvG+eB +AdwNXDd2XKCnIqz2/zB207vYoNNNRwYJhjMfKBY851XARVlxnTrNUIs8mT8RU31tS HQii4G/6V6xlG5ORfSwu1IAsEPOzlU/3nC4zlJOiXh3C/GGNsqvkSXPpvpn1qPs0v3 /nW6Zl5shI2VQ== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/15/2020 4:26 PM, Jiri Pirko wrote: > Tue, Sep 15, 2020 at 02:12:25PM CEST, moshe@nvidia.com wrote: >> On 9/14/2020 3:27 PM, Jiri Pirko wrote: >>> Mon, Sep 14, 2020 at 08:07:48AM CEST, moshe@mellanox.com wrote: > [..] > >>>> @@ -7392,6 +7485,11 @@ struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) >>>> if (!devlink) >>>> return NULL; >>>> devlink->ops = ops; >>>> + if (devlink_reload_actions_verify(devlink)) { >>> Move this check to the beginning. You don't need devlink instance for >>> the check, just ops. >> >> Right, will fix. >> >>> also, your devlink_reload_actions_verify() function returns >>> 0/-ESOMETHING. Treat it accordingly here. >> >> Well, yes, but I rather return NULL here since devlink_alloc() failed. If >> devlink_reload_actions_verify() fails it has WARN_ON which will lead the >> driver developer to his bug. > So let the verify() return bool. > My point is, if a function return 0/-ESOMETHING, you should not check > the return value directly but you should use int err/ret. OK, will fix. >>>> + kfree(devlink); >>>> + return NULL; >>>> + } > [...]