linux-kernel - [PATCH 0/8] i2c: fix reference leak when pm_runtime_get

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Message-ID: <20201201092924.112461-1-miaoqinglang@huawei.com>
Date:   Tue, 1 Dec 2020 17:29:24 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Michal Simek <michal.simek@...inx.com>,
        Dong Aisheng <aisheng.dong@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Vignesh R <vigneshr@...com>,
        "Aaro Koskinen" <aaro.koskinen@....fi>,
        Tony Lindgren <tony@...mide.com>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Pierre-Yves MORDRET <pierre-yves.mordret@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Qinglang Miao <miaoqinglang@...wei.com>
Subject: [PATCH 0/8] i2c: fix reference leak when pm_runtime_get_sync fails

pm_runtime_get_sync will increment the PM reference count
even failed. Forgetting to putting operation will result
in a reference leak here. 

Replace it with pm_runtime_resume_and_get to keep usage
counter balanced. 

BTW, pm_runtime_resume_and_get is introduced in v5.10-rc5 as
dd8088d5a896 ("PM: runtime: Add  pm_runtime_resume_and_get
to dealwith usage counter")

Qinglang Miao (8):
  i2c: cadence: fix reference leak when pm_runtime_get_sync fails
  i2c: img-scb: fix reference leak when pm_runtime_get_sync fails
  i2c: imx-lpi2c: fix reference leak when pm_runtime_get_sync fails
  i2c: imx: fix reference leak when pm_runtime_get_sync fails
  i2c: omap: fix reference leak when pm_runtime_get_sync fails
  i2c: sprd: fix reference leak when pm_runtime_get_sync fails
  i2c: stm32f7: fix reference leak when pm_runtime_get_sync fails
  i2c: xiic: fix reference leak when pm_runtime_get_sync fails

 drivers/i2c/busses/i2c-cadence.c   |  4 ++--
 drivers/i2c/busses/i2c-img-scb.c   |  4 ++--
 drivers/i2c/busses/i2c-imx-lpi2c.c |  2 +-
 drivers/i2c/busses/i2c-imx.c       |  4 ++--
 drivers/i2c/busses/i2c-omap.c      |  8 ++++----
 drivers/i2c/busses/i2c-sprd.c      |  4 ++--
 drivers/i2c/busses/i2c-stm32f7.c   | 12 ++++++------
 drivers/i2c/busses/i2c-xiic.c      |  4 ++--
 8 files changed, 21 insertions(+), 21 deletions(-)

-- 
2.23.0