linux-kernel - Re: [PATCH] soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm

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Message-Id: <20220608092118.1463835-1-f.fainelli@gmail.com>
Date:   Wed,  8 Jun 2022 02:21:18 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     bcm-kernel-feedback-list@...adcom.com,
        Miaoqian Lin <linmq006@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Kees Cook <keescook@...omium.org>,
        Helge Deller <deller@....de>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Gareth Powell <gpowell@...adcom.com>,
        Brian Norris <computersforpeace@...il.com>,
        Doug Berger <opendmb@...il.com>,
        Justin Chen <justinpopo6@...il.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe

On Thu, 26 May 2022 11:53:22 +0400, Miaoqian Lin <linmq006@...il.com> wrote:
> of_find_matching_node() returns a node pointer with refcount
> incremented, we should use of_node_put() on it when not need anymore.
> Add missing of_node_put() to avoid refcount leak.
> 
> In brcmstb_init_sram, it pass dn to of_address_to_resource(),
> of_address_to_resource() will call of_find_device_by_node() to take
> reference, so we should release the reference returned by
> of_find_matching_node().
> 
> Fixes: 0b741b8234c8 ("soc: bcm: brcmstb: Add support for S2/S3/S5 suspend states (ARM)")
> Signed-off-by: Miaoqian Lin <linmq006@...il.com>
> ---

Applied to https://github.com/Broadcom/stblinux/commits/drivers/fixes, thanks!
--
Florian