linux-kernel - Re: [PATCH] printf: Emit "SUCCESS" if NULL is passed for %pe

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Message-ID: <YzbyWL7rZhLUOjTR@smile.fi.intel.com>
Date:   Fri, 30 Sep 2022 16:42:48 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     Petr Mladek <pmladek@...e.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        kernel@...gutronix.de
Subject: Re: [PATCH] printf: Emit "SUCCESS" if NULL is passed for %pe

On Fri, Sep 30, 2022 at 03:24:24PM +0200, Uwe Kleine-König wrote:
> On Fri, Sep 30, 2022 at 02:14:16PM +0200, Petr Mladek wrote:
> > On Fri 2022-09-30 13:10:50, Uwe Kleine-König wrote:

...

> > If get_bla() returns NULL then it means a super fault. It means
> > that get_bla() failed and did not know why.
> 
> OK, I think we agree that a function that might return an error pointer
> shouldn't return NULL with the semantic "This is also an error."

But it neither means "success".

-- 
With Best Regards,
Andy Shevchenko