linux-kernel - [PATCH 4/6] input: gpio_keys_polled: use device_for_each_child_node

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240412-input_device_for_each_child_node_scoped-v1-4-dbad1bc7ea84@gmail.com>
Date: Fri, 12 Apr 2024 22:57:33 +0200
From: Javier Carrasco <javier.carrasco.cruz@...il.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Javier Carrasco <javier.carrasco.cruz@...il.com>
Subject: [PATCH 4/6] input: gpio_keys_polled: use
 device_for_each_child_node_scoped()

Switch to the _scoped() version introduced in commit 365130fd47af
("device property: Introduce device_for_each_child_node_scoped()")
to remove the need for manual calling of fwnode_handle_put() in the
paths where the code exits the loop early.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
---
 drivers/input/keyboard/gpio_keys_polled.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index b41fd1240f43..41ca0d3c9098 100644
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -144,7 +144,6 @@ gpio_keys_polled_get_devtree_pdata(struct device *dev)
 {
 	struct gpio_keys_platform_data *pdata;
 	struct gpio_keys_button *button;
-	struct fwnode_handle *child;
 	int nbuttons;
 
 	nbuttons = device_get_child_node_count(dev);
@@ -166,11 +165,10 @@ gpio_keys_polled_get_devtree_pdata(struct device *dev)
 
 	device_property_read_string(dev, "label", &pdata->name);
 
-	device_for_each_child_node(dev, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		if (fwnode_property_read_u32(child, "linux,code",
 					     &button->code)) {
 			dev_err(dev, "button without keycode\n");
-			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}
 

-- 
2.40.1