diff mbox series

[-next,15/19] hwmon: (corsair-psu) Use devm_hid_hw_start_and_open in corsairpsu_probe()

Message ID 20240904123607.3407364-16-lizetao1@huawei.com (mailing list archive)
State Changes Requested
Headers show
Series HID: convert to devm_hid_hw_start_and_open() | expand

Commit Message

Li Zetao Sept. 4, 2024, 12:36 p.m. UTC
Currently, the corsair-psu module needs to maintain hid resources
by itself. Consider using devm_hid_hw_start_and_open helper to ensure
that hid resources are consistent with the device life cycle, and release
hid resources before device is released. At the same time, it can avoid
the goto-release encoding, drop the fail_and_close and fail_and_stop
lables, and directly return the error code when an error occurs.

Signed-off-by: Li Zetao <lizetao1@huawei.com>
---
 drivers/hwmon/corsair-psu.c | 24 +++++-------------------
 1 file changed, 5 insertions(+), 19 deletions(-)

Comments

Wilken Gottwalt Sept. 6, 2024, 4:03 a.m. UTC | #1
On Wed, 4 Sep 2024 20:36:03 +0800
Li Zetao <lizetao1@huawei.com> wrote:

> Currently, the corsair-psu module needs to maintain hid resources
> by itself. Consider using devm_hid_hw_start_and_open helper to ensure
> that hid resources are consistent with the device life cycle, and release
> hid resources before device is released. At the same time, it can avoid
> the goto-release encoding, drop the fail_and_close and fail_and_stop
> lables, and directly return the error code when an error occurs.
> 
> Signed-off-by: Li Zetao <lizetao1@huawei.com>
> ---
>  drivers/hwmon/corsair-psu.c | 24 +++++-------------------
>  1 file changed, 5 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/hwmon/corsair-psu.c b/drivers/hwmon/corsair-psu.c
> index f8f22b8a67cd..b574ec9cd00f 100644
> --- a/drivers/hwmon/corsair-psu.c
> +++ b/drivers/hwmon/corsair-psu.c
> @@ -787,14 +787,10 @@ static int corsairpsu_probe(struct hid_device *hdev, const struct
> hid_device_id if (ret)
>  		return ret;
>  
> -	ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
> +	ret = devm_hid_hw_start_and_open(hdev, HID_CONNECT_HIDRAW);
>  	if (ret)
>  		return ret;
>  
> -	ret = hid_hw_open(hdev);
> -	if (ret)
> -		goto fail_and_stop;
> -
>  	priv->hdev = hdev;
>  	hid_set_drvdata(hdev, priv);
>  	mutex_init(&priv->lock);
> @@ -805,13 +801,13 @@ static int corsairpsu_probe(struct hid_device *hdev, const struct
> hid_device_id ret = corsairpsu_init(priv);
>  	if (ret < 0) {
>  		dev_err(&hdev->dev, "unable to initialize device (%d)\n", ret);
> -		goto fail_and_stop;
> +		return ret;
>  	}
>  
>  	ret = corsairpsu_fwinfo(priv);
>  	if (ret < 0) {
>  		dev_err(&hdev->dev, "unable to query firmware (%d)\n", ret);
> -		goto fail_and_stop;
> +		return ret;
>  	}
>  
>  	corsairpsu_get_criticals(priv);
> @@ -820,20 +816,12 @@ static int corsairpsu_probe(struct hid_device *hdev, const struct
> hid_device_id priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, "corsairpsu", priv,
>  							  &corsairpsu_chip_info, NULL);
>  
> -	if (IS_ERR(priv->hwmon_dev)) {
> -		ret = PTR_ERR(priv->hwmon_dev);
> -		goto fail_and_close;
> -	}
> +	if (IS_ERR(priv->hwmon_dev))
> +		return PTR_ERR(priv->hwmon_dev);
>  
>  	corsairpsu_debugfs_init(priv);
>  
>  	return 0;
> -
> -fail_and_close:
> -	hid_hw_close(hdev);
> -fail_and_stop:
> -	hid_hw_stop(hdev);
> -	return ret;
>  }
>  
>  static void corsairpsu_remove(struct hid_device *hdev)
> @@ -842,8 +830,6 @@ static void corsairpsu_remove(struct hid_device *hdev)
>  
>  	debugfs_remove_recursive(priv->debugfs);
>  	hwmon_device_unregister(priv->hwmon_dev);
> -	hid_hw_close(hdev);
> -	hid_hw_stop(hdev);
>  }
>  
>  static int corsairpsu_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data,

So far looks fine to me.

Reviewed-by: Wilken Gottwalt <wilken.gottwalt@posteo.net>

greetings,
Wilken
diff mbox series

Patch

diff --git a/drivers/hwmon/corsair-psu.c b/drivers/hwmon/corsair-psu.c
index f8f22b8a67cd..b574ec9cd00f 100644
--- a/drivers/hwmon/corsair-psu.c
+++ b/drivers/hwmon/corsair-psu.c
@@ -787,14 +787,10 @@  static int corsairpsu_probe(struct hid_device *hdev, const struct hid_device_id
 	if (ret)
 		return ret;
 
-	ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
+	ret = devm_hid_hw_start_and_open(hdev, HID_CONNECT_HIDRAW);
 	if (ret)
 		return ret;
 
-	ret = hid_hw_open(hdev);
-	if (ret)
-		goto fail_and_stop;
-
 	priv->hdev = hdev;
 	hid_set_drvdata(hdev, priv);
 	mutex_init(&priv->lock);
@@ -805,13 +801,13 @@  static int corsairpsu_probe(struct hid_device *hdev, const struct hid_device_id
 	ret = corsairpsu_init(priv);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "unable to initialize device (%d)\n", ret);
-		goto fail_and_stop;
+		return ret;
 	}
 
 	ret = corsairpsu_fwinfo(priv);
 	if (ret < 0) {
 		dev_err(&hdev->dev, "unable to query firmware (%d)\n", ret);
-		goto fail_and_stop;
+		return ret;
 	}
 
 	corsairpsu_get_criticals(priv);
@@ -820,20 +816,12 @@  static int corsairpsu_probe(struct hid_device *hdev, const struct hid_device_id
 	priv->hwmon_dev = hwmon_device_register_with_info(&hdev->dev, "corsairpsu", priv,
 							  &corsairpsu_chip_info, NULL);
 
-	if (IS_ERR(priv->hwmon_dev)) {
-		ret = PTR_ERR(priv->hwmon_dev);
-		goto fail_and_close;
-	}
+	if (IS_ERR(priv->hwmon_dev))
+		return PTR_ERR(priv->hwmon_dev);
 
 	corsairpsu_debugfs_init(priv);
 
 	return 0;
-
-fail_and_close:
-	hid_hw_close(hdev);
-fail_and_stop:
-	hid_hw_stop(hdev);
-	return ret;
 }
 
 static void corsairpsu_remove(struct hid_device *hdev)
@@ -842,8 +830,6 @@  static void corsairpsu_remove(struct hid_device *hdev)
 
 	debugfs_remove_recursive(priv->debugfs);
 	hwmon_device_unregister(priv->hwmon_dev);
-	hid_hw_close(hdev);
-	hid_hw_stop(hdev);
 }
 
 static int corsairpsu_raw_event(struct hid_device *hdev, struct hid_report *report, u8 *data,