[PATCH -next v3 06/15] HID: nintendo: Use devm_hid_hw_start_and_open in nintendo_hid_probe()

Li Zetao
2024-09-10T15:36:59Z

Currently, the nintendo 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 err_close and err_stop lables.

Signed-off-by: Li Zetao <lizetao1@huawei.com>
---
v2 -> v3: None
v2: https://lore.kernel.org/all/20240909012313.500341-7-lizetao1@huawei.com/
v1 -> v2: Adjust commit information
v1: https://lore.kernel.org/all/20240904123607.3407364-7-lizetao1@huawei.com/

drivers/hid/hid-nintendo.c | 23 ++++-------------------
1 file changed, 4 insertions(+), 19 deletions(-)

diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c
index 58cd0506e431..45ac4fd3c7ea 100644
--- a/drivers/hid/hid-nintendo.c
+++ b/drivers/hid/hid-nintendo.c
@@ -2673,31 +2673,23 @@ static int nintendo_hid_probe(struct hid_device *hdev,
*/
hdev->version |= 0x8000;

- ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
- if (ret) {
- hid_err(hdev, "HW start failed\n");
+ ret = devm_hid_hw_start_and_open(hdev, HID_CONNECT_HIDRAW);
+ if (ret)
goto err_wq;
- }
-
- ret = hid_hw_open(hdev);
- if (ret) {
- hid_err(hdev, "cannot start hardware I/O\n");
- goto err_stop;
- }

hid_device_io_start(hdev);

ret = joycon_init(hdev);
if (ret) {
hid_err(hdev, "Failed to initialize controller; ret=%d\n", ret);
- goto err_close;
+ goto err_wq;
}

/* Initialize the leds */
ret = joycon_leds_create(ctlr);
if (ret) {
hid_err(hdev, "Failed to create leds; ret=%d\n", ret);
- goto err_close;
+ goto err_wq;
}

/* Initialize the battery power supply */
@@ -2720,10 +2712,6 @@ static int nintendo_hid_probe(struct hid_device *hdev,

err_ida:
ida_free(&nintendo_player_id_allocator, ctlr->player_id);
-err_close:
- hid_hw_close(hdev);
-err_stop:
- hid_hw_stop(hdev);
err_wq:
destroy_workqueue(ctlr->rumble_queue);
err:
@@ -2745,9 +2733,6 @@ static void nintendo_hid_remove(struct hid_device *hdev)

destroy_workqueue(ctlr->rumble_queue);
ida_free(&nintendo_player_id_allocator, ctlr->player_id);
-
- hid_hw_close(hdev);
- hid_hw_stop(hdev);
}

#ifdef CONFIG_PM
--
2.34.1