linux-kernel - Re: [PATCH -next] i2c: imx-lpi2c: fix PM reference leak in lpi2c_imx_master

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Message-ID: <20210414075649.GC2180@ninjato>
Date:   Wed, 14 Apr 2021 09:56:49 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Ye Weihua <yeweihua4@...wei.com>
Cc:     aisheng.dong@....com, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, yangjihong1@...wei.com,
        zhangjinhao2@...wei.com
Subject: Re: [PATCH -next] i2c: imx-lpi2c: fix PM reference leak in
 lpi2c_imx_master_enable()

On Thu, Apr 08, 2021 at 07:19:30PM +0800, Ye Weihua wrote:
> The PM reference count is not expected to be incremented on return in
> ipi2c_imx_master_enable().
> 
> However, pm_runtime_get_sync() will increment the PM reference count
> even on failure. forgetting to put the reference again will result in
> a leak.
> 
> Replace it with pm_runtime_resume_and_get() to keep the usage counter
> balanced.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Ye Weihua <yeweihua4@...wei.com>

Thanks, yet I applied this series now:

http://patchwork.ozlabs.org/project/linux-i2c/list/?series=217733&state=*


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