linux-kernel - [PATCH 05/10] platform/x86: toshiba_acpi: register backlight with device-managed variant

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]

Date:   Wed, 24 Mar 2021 14:55:43 +0200
From:   Alexandru Ardelean <aardelean@...iqon.com>
To:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-iio@...r.kernel.org
Cc:     coproscefalo@...il.com, hdegoede@...hat.com,
        mgross@...ux.intel.com, jic23@...nel.org, linux@...iqon.com,
        Alexandru Ardelean <aardelean@...iqon.com>
Subject: [PATCH 05/10] platform/x86: toshiba_acpi: register backlight with device-managed variant

This change converts the registration of the backlight data with the
devm_backlight_device_register() function.
This way, the backlight_device_unregister() call is no longer required, and
the order of deregistration is made to be more symmetrical with the
registration order.

Signed-off-by: Alexandru Ardelean <aardelean@...iqon.com>
---
 drivers/platform/x86/toshiba_acpi.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 556f2cc99bad..ada2a2d8c913 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -2876,7 +2876,8 @@ static int toshiba_acpi_setup_keyboard(struct device *parent,
 	return error;
 }
 
-static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
+static int toshiba_acpi_setup_backlight(struct device *parent,
+					struct toshiba_acpi_dev *dev)
 {
 	struct backlight_properties props;
 	int brightness;
@@ -2924,11 +2925,12 @@ static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
 	if (dev->tr_backlight_supported)
 		props.max_brightness++;
 
-	dev->backlight_dev = backlight_device_register("toshiba",
-						       &dev->acpi_dev->dev,
-						       dev,
-						       &toshiba_backlight_data,
-						       &props);
+	dev->backlight_dev = devm_backlight_device_register(parent,
+							    "toshiba",
+							    &dev->acpi_dev->dev,
+							    dev,
+							    &toshiba_backlight_data,
+							    &props);
 	if (IS_ERR(dev->backlight_dev)) {
 		ret = PTR_ERR(dev->backlight_dev);
 		pr_err("Could not register toshiba backlight device\n");
@@ -2999,8 +3001,6 @@ static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
 		sysfs_remove_group(&dev->acpi_dev->dev.kobj,
 				   &toshiba_attr_group);
 
-	backlight_device_unregister(dev->backlight_dev);
-
 	led_classdev_unregister(&dev->led_dev);
 	led_classdev_unregister(&dev->kbd_led);
 	led_classdev_unregister(&dev->eco_led);
@@ -3104,9 +3104,9 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
 	ret = get_tr_backlight_status(dev, &dummy);
 	dev->tr_backlight_supported = !ret;
 
-	ret = toshiba_acpi_setup_backlight(dev);
+	ret = toshiba_acpi_setup_backlight(parent, dev);
 	if (ret)
-		goto error;
+		return ret;
 
 	toshiba_illumination_available(dev);
 	if (dev->illumination_supported) {
-- 
2.30.2