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Message-ID: <2d217351-53db-8978-9fe6-0e02bb4d4897@foss.st.com>
Date: Tue, 21 Mar 2023 10:01:51 +0100
From: Arnaud POULIQUEN <arnaud.pouliquen@...s.st.com>
To: Mathieu Poirier <mathieu.poirier@...aro.org>,
<andersson@...nel.org>
CC: <shawnguo@...nel.org>, <s.hauer@...gutronix.de>,
<kernel@...gutronix.de>, <festevam@...il.com>, <linux-imx@....com>,
<patrice.chotard@...s.st.com>, <mcoquelin.stm32@...il.com>,
<alexandre.torgue@...s.st.com>, <arnaud.pouliquen@...com>,
<hongxing.zhu@....com>, <peng.fan@....com>,
<shengjiu.wang@....com>, <linux-remoteproc@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/5] remoteproc: st: Call of_node_put() on iteration error
On 3/20/23 23:18, Mathieu Poirier wrote:
> Function of_phandle_iterator_next() calls of_node_put() on the last
> device_node it iterated over, but when the loop exits prematurely it has
> to be called explicitly.
>
> Fixes: 3df52ed7f269 ("remoteproc: st: add reserved memory support")
> Cc: stable@...r.kernel.org
> Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
Thanks,
Arnaud
> ---
> drivers/remoteproc/st_remoteproc.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/remoteproc/st_remoteproc.c b/drivers/remoteproc/st_remoteproc.c
> index a3268d95a50e..e6bd3c7a950a 100644
> --- a/drivers/remoteproc/st_remoteproc.c
> +++ b/drivers/remoteproc/st_remoteproc.c
> @@ -129,6 +129,7 @@ static int st_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
> while (of_phandle_iterator_next(&it) == 0) {
> rmem = of_reserved_mem_lookup(it.node);
> if (!rmem) {
> + of_node_put(it.node);
> dev_err(dev, "unable to acquire memory-region\n");
> return -EINVAL;
> }
> @@ -150,8 +151,10 @@ static int st_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
> it.node->name);
> }
>
> - if (!mem)
> + if (!mem) {
> + of_node_put(it.node);
> return -ENOMEM;
> + }
>
> rproc_add_carveout(rproc, mem);
> index++;
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