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[24.6.192.50]) by smtp.gmail.com with ESMTPSA id v22sm6115822pfa.49.2019.03.15.08.56.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 15 Mar 2019 08:56:46 -0700 (PDT) Subject: Re: [PATCH] tracing: initialize variable in create_dyn_event() To: Masami Hiramatsu , Steven Rostedt Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Tom Zanussi , Ravi Bangoria References: <1548382670-30266-1-git-send-email-frowand.list@gmail.com> <2872713a-8b99-5117-27df-eeda824e55a0@gmail.com> <20190314181908.0af526af@gandalf.local.home> <20190315082637.e38ff91363ecd57de4015c59@kernel.org> From: Frank Rowand Message-ID: <99e329a6-dff9-6eb4-8977-72e9d8aec28a@gmail.com> Date: Fri, 15 Mar 2019 08:56:45 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20190315082637.e38ff91363ecd57de4015c59@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/14/19 4:26 PM, Masami Hiramatsu wrote: > Hi Frank and Steve, > > Thank you for pointing it out :) > > On Thu, 14 Mar 2019 18:19:08 -0400 > Steven Rostedt wrote: > >> On Thu, 14 Mar 2019 14:05:02 -0700 >> Frank Rowand wrote: >> >>> Hi Steve, >>> >>> Ping. >> >> Thanks, this got buried. >> >>>> static int create_dyn_event(int argc, char **argv) >>>> { >>>> struct dyn_event_operations *ops; >>>> - int ret; >>>> + int ret = 0; >> >> Probably should be ret = -ENODEV; >> >> As if ret doesn't get set, then no dynamic code has been registered, >> and something is truly wrong. > > I Agreed to return -ENODEV instead of 0. > > Thank you, > >> >> -- Steve >> >> >>>> >>>> if (argv[0][0] == '-' || argv[0][0] == '!') >>>> return dyn_event_release(argc, argv, NULL); >>>> >> > > Thanks, I'll fix and resend.