linux-kernel - Re: [PATCH] tracing: initialize variable in create_dyn

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Date:   Fri, 15 Mar 2019 08:26:37 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Frank Rowand <frowand.list@...il.com>,
        linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>,
        Ravi Bangoria <ravi.bangoria@...ux.vnet.ibm.com>,
        Masami Hiramatsu <mhiramat@...nel.org>
Subject: Re: [PATCH] tracing: initialize variable in create_dyn_event()

Hi Frank and Steve,

Thank you for pointing it out :)

On Thu, 14 Mar 2019 18:19:08 -0400
Steven Rostedt <rostedt@...dmis.org> wrote:

> On Thu, 14 Mar 2019 14:05:02 -0700
> Frank Rowand <frowand.list@...il.com> 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);
> > >   
> 


-- 
Masami Hiramatsu <mhiramat@...nel.org>