From: Wolfram Sang <wsa@kernel.org>
To: Dinghao Liu <dinghao.liu@zju.edu.cn>
Cc: kjlu@umn.edu, Markus Elfring <Markus.Elfring@web.de>,
Dong Aisheng <aisheng.dong@nxp.com>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Fugang Duan <fugang.duan@nxp.com>,
linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [v3] i2c: imx-lpi2c: Fix runtime PM imbalance on error
Date: Sun, 14 Jun 2020 11:12:03 +0200 [thread overview]
Message-ID: <20200614091203.GC2878@kunai> (raw)
In-Reply-To: <20200601061640.27632-1-dinghao.liu@zju.edu.cn>
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On Mon, Jun 01, 2020 at 02:16:40PM +0800, Dinghao Liu wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter even
> the call returns an error code. Thus a corresponding decrement is
> needed on the error handling path to keep the counter balanced.
Can you point me to a discussion where it was decided that this is a
proper fix? I'd think we rather should fix pm_runtime_get_sync() but
maybe there are technical reasons against it.
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WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa@kernel.org>
To: Dinghao Liu <dinghao.liu@zju.edu.cn>
Cc: Dong Aisheng <aisheng.dong@nxp.com>,
Fugang Duan <fugang.duan@nxp.com>,
Fabio Estevam <festevam@gmail.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
kjlu@umn.edu, linux-kernel@vger.kernel.org,
Markus Elfring <Markus.Elfring@web.de>,
NXP Linux Team <linux-imx@nxp.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Shawn Guo <shawnguo@kernel.org>,
linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org
Subject: Re: [PATCH] [v3] i2c: imx-lpi2c: Fix runtime PM imbalance on error
Date: Sun, 14 Jun 2020 11:12:03 +0200 [thread overview]
Message-ID: <20200614091203.GC2878@kunai> (raw)
In-Reply-To: <20200601061640.27632-1-dinghao.liu@zju.edu.cn>
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On Mon, Jun 01, 2020 at 02:16:40PM +0800, Dinghao Liu wrote:
> pm_runtime_get_sync() increments the runtime PM usage counter even
> the call returns an error code. Thus a corresponding decrement is
> needed on the error handling path to keep the counter balanced.
Can you point me to a discussion where it was decided that this is a
proper fix? I'd think we rather should fix pm_runtime_get_sync() but
maybe there are technical reasons against it.
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next prev parent reply other threads:[~2020-06-14 9:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-01 6:16 [PATCH] [v3] i2c: imx-lpi2c: Fix runtime PM imbalance on error Dinghao Liu
2020-06-01 6:16 ` Dinghao Liu
2020-06-01 6:24 ` [EXT] " Andy Duan
2020-06-01 6:24 ` Andy Duan
2020-06-01 6:42 ` [PATCH v3] i2c: imx-lpi2c: Fix runtime PM imbalance in lpi2c_imx_master_enable() Markus Elfring
2020-06-01 6:42 ` Markus Elfring
2020-06-01 6:42 ` Markus Elfring
2020-06-14 9:12 ` Wolfram Sang [this message]
2020-06-14 9:12 ` [PATCH] [v3] i2c: imx-lpi2c: Fix runtime PM imbalance on error Wolfram Sang
2020-06-14 12:08 ` dinghao.liu
2020-06-14 12:08 ` dinghao.liu
2020-06-15 6:33 ` Aisheng Dong
2020-06-15 6:33 ` Aisheng Dong
2020-06-15 7:06 ` Wolfram Sang
2020-06-15 7:06 ` Wolfram Sang
2020-06-15 7:40 ` Markus Elfring
2020-06-15 7:40 ` Markus Elfring
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