From: Andrew Duggan <aduggan@synaptics.com>
To: <linux-input@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: Andrew Duggan <aduggan@synaptics.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Linus Walleij <linus.walleij@linaro.org>,
Jiri Kosina <jikos@kernel.org>,
Benjamin Tissoires <benjamin.tissoires@redhat.com>,
Vincent Huang <vincent.huang@tw.synaptics.com>,
Nick Dyer <nick@shmanahar.org>, Chris Healy <cphealy@gmail.com>
Subject: [PATCH v3 1/8] Input: synaptics-rmi4: Use of_get_child_by_name() instead of of_find_node_by_name()
Date: Wed, 13 Jul 2016 23:08:08 -0700 [thread overview]
Message-ID: <1468476488-7935-1-git-send-email-aduggan@synaptics.com> (raw)
Calling of_find_node_by_name() assumes that the caller has incremented
the refcount of the of_node being passed in. Currently, the caller is
not incrementing the refcount of the of_node which results in the node
being prematurely freed when of_find_node_by_name() calls of_node_put()
on it. Instead use of_get_child_by_name() which does not call put on the
of_node.
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
---
drivers/input/rmi4/rmi_bus.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c
index b368b05..253df96 100644
--- a/drivers/input/rmi4/rmi_bus.c
+++ b/drivers/input/rmi4/rmi_bus.c
@@ -157,11 +157,11 @@ static int rmi_function_match(struct device *dev, struct device_driver *drv)
static void rmi_function_of_probe(struct rmi_function *fn)
{
char of_name[9];
+ struct device_node *node = fn->rmi_dev->xport->dev->of_node;
snprintf(of_name, sizeof(of_name), "rmi4-f%02x",
fn->fd.function_number);
- fn->dev.of_node = of_find_node_by_name(
- fn->rmi_dev->xport->dev->of_node, of_name);
+ fn->dev.of_node = of_get_child_by_name(node, of_name);
}
#else
static inline void rmi_function_of_probe(struct rmi_function *fn)
--
2.5.0
next reply other threads:[~2016-07-14 6:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-14 6:08 Andrew Duggan [this message]
2016-07-18 14:48 ` [PATCH v3 1/8] Input: synaptics-rmi4: Use of_get_child_by_name() instead of of_find_node_by_name() Benjamin Tissoires
2016-07-18 23:13 ` Andrew Duggan
2016-07-19 9:37 ` Benjamin Tissoires
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