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From: Wolfram Sang <wsa@kernel.org>
To: Ye Weihua <yeweihua4@huawei.com>
Cc: aisheng.dong@nxp.com, shawnguo@kernel.org,
	s.hauer@pengutronix.de, kernel@pengutronix.de,
	festevam@gmail.com, linux-imx@nxp.com, linux-i2c@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, yangjihong1@huawei.com,
	zhangjinhao2@huawei.com
Subject: Re: [PATCH -next] i2c: imx-lpi2c: fix PM reference leak in lpi2c_imx_master_enable()
Date: Wed, 14 Apr 2021 09:56:49 +0200	[thread overview]
Message-ID: <20210414075649.GC2180@ninjato> (raw)
In-Reply-To: <20210408111930.203574-1-yeweihua4@huawei.com>

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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@huawei.com>
> Signed-off-by: Ye Weihua <yeweihua4@huawei.com>

Thanks, yet I applied this series now:

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


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WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa@kernel.org>
To: Ye Weihua <yeweihua4@huawei.com>
Cc: aisheng.dong@nxp.com, shawnguo@kernel.org,
	s.hauer@pengutronix.de, kernel@pengutronix.de,
	festevam@gmail.com, linux-imx@nxp.com, linux-i2c@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, yangjihong1@huawei.com,
	zhangjinhao2@huawei.com
Subject: Re: [PATCH -next] i2c: imx-lpi2c: fix PM reference leak in lpi2c_imx_master_enable()
Date: Wed, 14 Apr 2021 09:56:49 +0200	[thread overview]
Message-ID: <20210414075649.GC2180@ninjato> (raw)
In-Reply-To: <20210408111930.203574-1-yeweihua4@huawei.com>


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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@huawei.com>
> Signed-off-by: Ye Weihua <yeweihua4@huawei.com>

Thanks, yet I applied this series now:

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


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  reply	other threads:[~2021-04-14  7:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-08 11:19 [PATCH -next] i2c: imx-lpi2c: fix PM reference leak in lpi2c_imx_master_enable() Ye Weihua
2021-04-08 11:19 ` Ye Weihua
2021-04-14  7:56 ` Wolfram Sang [this message]
2021-04-14  7:56   ` Wolfram Sang

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