From: Vladimir Zapolskiy <vz-ChpfBGZJDbMAvxtiuMwx3w@public.gmane.org>
To: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
Cc: Peter Korsgaard
<peter.korsgaard-ob4gmnvZ1/cAvxtiuMwx3w@public.gmane.org>,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] i2c: muxes: fix leaked i2c adapter device node references
Date: Wed, 26 Aug 2015 23:59:33 +0300 [thread overview]
Message-ID: <1440622773-20913-1-git-send-email-vz@mleia.com> (raw)
Every call of of_parse_phandle() increments user count of found device
node, if OF_DYNAMIC is enabled.
The change fixes all similar addressed cases in drivers/i2c.
Signed-off-by: Vladimir Zapolskiy <vz-ChpfBGZJDbMAvxtiuMwx3w@public.gmane.org>
---
drivers/i2c/muxes/i2c-arb-gpio-challenge.c | 1 +
drivers/i2c/muxes/i2c-mux-gpio.c | 1 +
drivers/i2c/muxes/i2c-mux-pinctrl.c | 1 +
drivers/i2c/muxes/i2c-mux-reg.c | 1 +
4 files changed, 4 insertions(+)
diff --git a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
index 71aac09..402e3a6 100644
--- a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
+++ b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c
@@ -197,6 +197,7 @@ static int i2c_arbitrator_probe(struct platform_device *pdev)
return -EINVAL;
}
arb->parent = of_get_i2c_adapter_by_node(parent_np);
+ of_node_put(parent_np);
if (!arb->parent) {
dev_err(dev, "Cannot find parent bus\n");
return -EPROBE_DEFER;
diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c
index 70db992..b8e11c1 100644
--- a/drivers/i2c/muxes/i2c-mux-gpio.c
+++ b/drivers/i2c/muxes/i2c-mux-gpio.c
@@ -76,6 +76,7 @@ static int i2c_mux_gpio_probe_dt(struct gpiomux *mux,
return -ENODEV;
}
adapter = of_find_i2c_adapter_by_node(adapter_np);
+ of_node_put(adapter_np);
if (!adapter)
return -EPROBE_DEFER;
diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c
index b48378c..b5a982b 100644
--- a/drivers/i2c/muxes/i2c-mux-pinctrl.c
+++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c
@@ -111,6 +111,7 @@ static int i2c_mux_pinctrl_parse_dt(struct i2c_mux_pinctrl *mux,
return -ENODEV;
}
adapter = of_find_i2c_adapter_by_node(adapter_np);
+ of_node_put(adapter_np);
if (!adapter) {
dev_err(mux->dev, "Cannot find parent bus\n");
return -EPROBE_DEFER;
diff --git a/drivers/i2c/muxes/i2c-mux-reg.c b/drivers/i2c/muxes/i2c-mux-reg.c
index 86d41d36..57ec57e 100644
--- a/drivers/i2c/muxes/i2c-mux-reg.c
+++ b/drivers/i2c/muxes/i2c-mux-reg.c
@@ -106,6 +106,7 @@ static int i2c_mux_reg_probe_dt(struct regmux *mux,
return -ENODEV;
}
adapter = of_find_i2c_adapter_by_node(adapter_np);
+ of_node_put(adapter_np);
if (!adapter)
return -EPROBE_DEFER;
--
2.1.4
next reply other threads:[~2015-08-26 20:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-26 20:59 Vladimir Zapolskiy [this message]
[not found] ` <1440622773-20913-1-git-send-email-vz-ChpfBGZJDbMAvxtiuMwx3w@public.gmane.org>
2015-08-31 20:40 ` [PATCH] i2c: muxes: fix leaked i2c adapter device node references Wolfram Sang
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