From: Vinod Koul <vkoul@kernel.org>
To: Sinan Kaya <okaya@kernel.org>
Cc: Nishka Dasgupta <nishkadg.linux@gmail.com>,
agross@kernel.org, dan.j.williams@intel.com,
linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org
Subject: Re: [PATCH v2] dma: qcom: hidma_mgmt: Add of_node_put() before goto
Date: Thu, 8 Aug 2019 17:57:56 +0530 [thread overview]
Message-ID: <20190808122756.GS12733@vkoul-mobl.Dlink> (raw)
In-Reply-To: <eab2555a-07ad-9e48-14d4-e34417d52fbb@kernel.org>
On 24-07-19, 13:25, Sinan Kaya wrote:
> On 7/24/2019 4:16 AM, Nishka Dasgupta wrote:
> > Each iteration of for_each_available_child_of_node puts the previous
> > node, but in the case of a goto from the middle of the loop, there is
> > no put, thus causing a memory leak.
> > Hence add an of_node_put under the label that the gotos point to.
> > In order to avoid decrementing an already-decremented refcount, copy the
> > original contents of the label (including the return statement) to just
> > above the label, so that the code under the label is executed only when
> > a goto exit from the loop occurs.
> > Additionally, remove an unnecessary get/put pair from the loop, as the
> > loop itself already keeps track of refcount.
> > Issue found with Coccinelle.
> >
> > Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
>
> nit: please post v3 with dmaengine:qcom:hidma_mgmt:....
>
> Vinod doesn't like commit subjectss in this directory to have dma name
> on it. You can keep my acked-by.
That's right but I am okay to hand edit while applying for drive by
contributors :) so applied with you ack
> Acked-by: Sinan Kaya <okaya@kernel.org>
>
--
~Vinod
prev parent reply other threads:[~2019-08-08 12:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-24 8:16 [PATCH v2] dma: qcom: hidma_mgmt: Add of_node_put() before goto Nishka Dasgupta
2019-07-24 17:25 ` Sinan Kaya
2019-08-08 12:27 ` Vinod Koul [this message]
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