| Message ID | 20240909012313.500341-13-lizetao1@huawei.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | HID: convert to devm_hid_hw_start_and_open() | expand |
On Mon, Sep 09, 2024 at 09:23:10AM +0800, Li Zetao wrote: > Currently, the waterforce module needs to maintain hid resources > by itself. Use 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> Acked-by: Guenter Roeck <linux@roeck-us.net>
On 2024-09-09 03:23:10 GMT+02:00, Li Zetao wrote: > Currently, the waterforce module needs to maintain hid resources > by itself. Use 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> Reviewed-by: Aleksa Savic <savicaleksa83@gmail.com>
diff --git a/drivers/hwmon/gigabyte_waterforce.c b/drivers/hwmon/gigabyte_waterforce.c index 8129d7b3ceaf..9052d1c3d5aa 100644 --- a/drivers/hwmon/gigabyte_waterforce.c +++ b/drivers/hwmon/gigabyte_waterforce.c @@ -337,23 +337,13 @@ static int waterforce_probe(struct hid_device *hdev, const struct hid_device_id /* * Enable hidraw so existing user-space tools can continue to work. */ - ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW); - if (ret) { - hid_err(hdev, "hid hw start failed with %d\n", ret); + ret = devm_hid_hw_start_and_open(hdev, HID_CONNECT_HIDRAW); + if (ret) return ret; - } - - ret = hid_hw_open(hdev); - if (ret) { - hid_err(hdev, "hid hw open failed with %d\n", ret); - goto fail_and_stop; - } priv->buffer = devm_kzalloc(&hdev->dev, MAX_REPORT_LENGTH, GFP_KERNEL); - if (!priv->buffer) { - ret = -ENOMEM; - goto fail_and_close; - } + if (!priv->buffer) + return -ENOMEM; mutex_init(&priv->status_report_request_mutex); mutex_init(&priv->buffer_lock); @@ -371,18 +361,12 @@ static int waterforce_probe(struct hid_device *hdev, const struct hid_device_id if (IS_ERR(priv->hwmon_dev)) { ret = PTR_ERR(priv->hwmon_dev); hid_err(hdev, "hwmon registration failed with %d\n", ret); - goto fail_and_close; + return ret; } waterforce_debugfs_init(priv); return 0; - -fail_and_close: - hid_hw_close(hdev); -fail_and_stop: - hid_hw_stop(hdev); - return ret; } static void waterforce_remove(struct hid_device *hdev) @@ -391,9 +375,6 @@ static void waterforce_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 const struct hid_device_id waterforce_table[] = {
Currently, the waterforce module needs to maintain hid resources by itself. Use 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> --- v1 -> v2: Adjust commit information v1: https://lore.kernel.org/all/20240904123607.3407364-16-lizetao1@huawei.com/ drivers/hwmon/gigabyte_waterforce.c | 29 +++++------------------------ 1 file changed, 5 insertions(+), 24 deletions(-)