All of lore.kernel.org
 help / color / mirror / Atom feed
From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: Petr Mladek <pmladek@suse.com>,
	linux-kernel@vger.kernel.org, rafael@kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	linux-acpi@vger.kernel.org, devicetree@vger.kernel.org,
	Rob Herring <robh@kernel.org>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Subject: [PATCH v5 01/11] software node: Get reference to parent swnode in get_parent op
Date: Mon,  2 Sep 2019 16:57:22 +0300	[thread overview]
Message-ID: <20190902135732.23455-2-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20190902135732.23455-1-sakari.ailus@linux.intel.com>

The software_node_get_parent() returned a pointer to the parent swnode,
but did not take a reference to it, leading the caller to put a reference
that was not taken. Take that reference now.

Fixes: 59abd83672f7 ("drivers: base: Introducing software nodes to the firmware node framework")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/base/swnode.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
index e7b3aa3bd55ad..a7cb41812cfda 100644
--- a/drivers/base/swnode.c
+++ b/drivers/base/swnode.c
@@ -520,7 +520,10 @@ software_node_get_parent(const struct fwnode_handle *fwnode)
 {
 	struct swnode *swnode = to_swnode(fwnode);
 
-	return swnode ? (swnode->parent ? &swnode->parent->fwnode : NULL) : NULL;
+	if (!swnode || !swnode->parent)
+		return NULL;
+
+	return fwnode_handle_get(&swnode->parent->fwnode);
 }
 
 static struct fwnode_handle *
-- 
2.20.1


  reply	other threads:[~2019-09-02 13:57 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-02 13:57 [PATCH v5 00/11] Device property improvements, add %pfw format specifier Sakari Ailus
2019-09-02 13:57 ` Sakari Ailus [this message]
2019-09-02 13:57 ` [PATCH v5 02/11] software node: Make argument to to_software_node const Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 03/11] device property: Move fwnode_get_parent() up Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 04/11] device property: Add functions for accessing node's parents Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 05/11] device property: Add fwnode_get_name for returning the name of a node Sakari Ailus
2019-09-03 10:10   ` Heikki Krogerus
2019-09-03 11:24     ` Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 06/11] device property: Add a function to obtain a node's prefix Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 07/11] lib/vsprintf: Remove support for %pF and %pf in favour of %pS and %ps Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 08/11] lib/vsprintf: Make use of fwnode API to obtain node names and separators Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 09/11] lib/vsprintf: OF nodes are first and foremost, struct device_nodes Sakari Ailus
2019-09-03  8:52   ` Petr Mladek
2019-09-03  9:28     ` Petr Mladek
2019-09-03 11:28       ` Andy Shevchenko
2019-09-06  7:04         ` Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 10/11] lib/vsprintf: Add %pfw conversion specifier for printing fwnode names Sakari Ailus
2019-09-02 13:57 ` [PATCH v5 11/11] lib/test_printf: Add tests for %pfw printk modifier Sakari Ailus
2019-09-02 16:13   ` Andy Shevchenko
2019-09-04 16:10     ` Sakari Ailus
2019-09-04 17:22       ` Andy Shevchenko
2019-09-06  7:00         ` Sakari Ailus
2019-09-03  9:38 ` [PATCH v5 00/11] Device property improvements, add %pfw format specifier Joe Perches
2019-09-04 16:04   ` Sakari Ailus

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190902135732.23455-2-sakari.ailus@linux.intel.com \
    --to=sakari.ailus@linux.intel.com \
    --cc=andriy.shevchenko@linux.intel.com \
    --cc=devicetree@vger.kernel.org \
    --cc=heikki.krogerus@linux.intel.com \
    --cc=linux-acpi@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=pmladek@suse.com \
    --cc=rafael@kernel.org \
    --cc=robh@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.