linux-kernel - Re: [PATCH] misc: Return error on error path

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Message-ID: <CAHp75VcwZHH5pdmCe9Y_kqEmVH9ELbPWB+ao0dNszNN4Fc3e2Q@mail.gmail.com>
Date:   Mon, 31 Jul 2017 19:25:17 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Anton Vasilyev <vasilyev@...ras.ru>
Cc:     Colin Ian King <colin.king@...onical.com>,
        Jiri Kosina <jkosina@...e.cz>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        ldv-project@...uxtesting.org
Subject: Re: [PATCH] misc: Return error on error path

On Mon, Jul 31, 2017 at 6:48 PM, Anton Vasilyev <vasilyev@...ras.ru> wrote:
> If ibmasm_event_buffer_init() or ibmasm_heartbeat_init() fails,
> then ibmasm_init_one() release all resources and return 0 on error path.
>
> The patch adds corresponding error for fails.
>
> Found by Linux Driver Verification project (linuxtesting.org).

To me looks better to

- return 1;
+ return -ENOMEM;

in event.c, and then...

>         if (ibmasm_event_buffer_init(sp)) {
>                 dev_err(sp->dev, "Failed to allocate event buffer\n");
> +               result = -ENOMEM;
>                 goto error_eventbuffer;
>         }

result = ibmasm_event_buffer_init(sp);
if (result) {
 ...
}

>         if (ibmasm_heartbeat_init(sp)) {
>                 dev_err(sp->dev, "Failed to allocate heartbeat command\n");
> +               result = -ENOMEM;
>                 goto error_heartbeat;
>         }

Ditto.

-- 
With Best Regards,
Andy Shevchenko