Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Thu, 28 Mar 2019 10:07:43 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     David Kozub <zub@linux.fjfi.cvut.cz>
Cc:     Jens Axboe <axboe@kernel.dk>,
        Jonathan Derrick <jonathan.derrick@intel.com>,
        Scott Bauer <sbauer@plzdonthack.me>,
        linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
        Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Subject: Re: [PATCH 14/16] block: sed-opal: pass steps via argument rather
 than via opal_dev
Message-ID: <20190328170743.GF27845@infradead.org>
References: <1550103368-4605-1-git-send-email-zub@linux.fjfi.cvut.cz>
 <1550103368-4605-15-git-send-email-zub@linux.fjfi.cvut.cz>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1550103368-4605-15-git-send-email-zub@linux.fjfi.cvut.cz>
User-Agent: Mutt/1.9.2 (2017-12-15)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu, Feb 14, 2019 at 01:16:06AM +0100, David Kozub wrote:
> The steps argument is only read by the next function, so it can
> be passed directly as an argument rather than via opal_dev.
> 
> Normally, the steps is an array on the stack, so the pointer stops
> being valid then the function that set opal_dev.steps returns.
> If opal_dev.steps was not set to NULL before return it would become
> a dangling pointer. When the steps are passed as argument this
> becomes easier to see and more difficult to misuse.
> 
> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>