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Message-Id: <20220607164918.718474217@linuxfoundation.org>
Date: Tue, 7 Jun 2022 19:03:18 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
Wolfram Sang <wsa+renesas@...g-engineering.com>,
Wolfram Sang <wsa@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 341/452] i2c: rcar: fix PM ref counts in probe error paths
From: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
[ Upstream commit 3fe2ec59db1a7569e18594b9c0cf1f4f1afd498e ]
We have to take care of ID_P_PM_BLOCKED when bailing out during probe.
Fixes: 7ee24eb508d6 ("i2c: rcar: disable PM in multi-master mode")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
Signed-off-by: Wolfram Sang <wsa@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/i2c/busses/i2c-rcar.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 8722ca23f889..6a7a7a074a97 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -999,8 +999,10 @@ static int rcar_i2c_probe(struct platform_device *pdev)
pm_runtime_enable(dev);
pm_runtime_get_sync(dev);
ret = rcar_i2c_clock_calculate(priv);
- if (ret < 0)
- goto out_pm_put;
+ if (ret < 0) {
+ pm_runtime_put(dev);
+ goto out_pm_disable;
+ }
rcar_i2c_write(priv, ICSAR, 0); /* Gen2: must be 0 if not using slave */
@@ -1029,19 +1031,19 @@ static int rcar_i2c_probe(struct platform_device *pdev)
ret = platform_get_irq(pdev, 0);
if (ret < 0)
- goto out_pm_disable;
+ goto out_pm_put;
priv->irq = ret;
ret = devm_request_irq(dev, priv->irq, irqhandler, irqflags, dev_name(dev), priv);
if (ret < 0) {
dev_err(dev, "cannot get irq %d\n", priv->irq);
- goto out_pm_disable;
+ goto out_pm_put;
}
platform_set_drvdata(pdev, priv);
ret = i2c_add_numbered_adapter(adap);
if (ret < 0)
- goto out_pm_disable;
+ goto out_pm_put;
if (priv->flags & ID_P_HOST_NOTIFY) {
priv->host_notify_client = i2c_new_slave_host_notify_device(adap);
@@ -1058,7 +1060,8 @@ static int rcar_i2c_probe(struct platform_device *pdev)
out_del_device:
i2c_del_adapter(&priv->adap);
out_pm_put:
- pm_runtime_put(dev);
+ if (priv->flags & ID_P_PM_BLOCKED)
+ pm_runtime_put(dev);
out_pm_disable:
pm_runtime_disable(dev);
return ret;
--
2.35.1
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