From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Zheng Yongjun <zhengyongjun3@huawei.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Sasha Levin <sashal@kernel.org>,
mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com,
linux-input@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 4.14 5/8] Input: stmfts - fix reference leak in stmfts_input_open
Date: Wed, 6 Apr 2022 21:16:42 -0400 [thread overview]
Message-ID: <20220407011645.115412-5-sashal@kernel.org> (raw)
In-Reply-To: <20220407011645.115412-1-sashal@kernel.org>
From: Zheng Yongjun <zhengyongjun3@huawei.com>
[ Upstream commit 26623eea0da3476446909af96c980768df07bbd9 ]
pm_runtime_get_sync() will increment pm usage counter even it
failed. Forgetting to call pm_runtime_put_noidle will result
in reference leak in stmfts_input_open, so we should fix it.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20220317131604.53538-1-zhengyongjun3@huawei.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/input/touchscreen/stmfts.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/input/touchscreen/stmfts.c b/drivers/input/touchscreen/stmfts.c
index d9e93dabbca2..9007027a7ad9 100644
--- a/drivers/input/touchscreen/stmfts.c
+++ b/drivers/input/touchscreen/stmfts.c
@@ -344,11 +344,11 @@ static int stmfts_input_open(struct input_dev *dev)
err = pm_runtime_get_sync(&sdata->client->dev);
if (err < 0)
- return err;
+ goto out;
err = i2c_smbus_write_byte(sdata->client, STMFTS_MS_MT_SENSE_ON);
if (err)
- return err;
+ goto out;
mutex_lock(&sdata->mutex);
sdata->running = true;
@@ -371,7 +371,9 @@ static int stmfts_input_open(struct input_dev *dev)
"failed to enable touchkey\n");
}
- return 0;
+out:
+ pm_runtime_put_noidle(&sdata->client->dev);
+ return err;
}
static void stmfts_input_close(struct input_dev *dev)
--
2.35.1
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next parent reply other threads:[~2022-04-07 1:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220407011645.115412-1-sashal@kernel.org>
2022-04-07 1:16 ` Sasha Levin [this message]
2022-04-07 1:16 ` [PATCH AUTOSEL 4.14 8/8] ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame() Sasha Levin
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