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From: "Derek J. Clark" <derekjohn.clark@gmail.com>
To: Jiri Kosina <jikos@kernel.org>, Benjamin Tissoires <bentiss@kernel.org>
Cc: "Pierre-Loup A . Griffais" <pgriffais@valvesoftware.com>,
	"Derek J . Clark" <derekjohn.clark@gmail.com>,
	linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
	kernel@lists.opengamingcollective.org, stable@vger.kernel.org
Subject: [PATCH 03/10] HID: hid-lenovo-go-s: Prevent deadlock if device removed during setup
Date: Mon, 14 Sep 2026 15:52:56 -0700	[thread overview]
Message-ID: <20260914225303.868569-4-derekjohn.clark@gmail.com> (raw)
In-Reply-To: <20260914225303.868569-1-derekjohn.clark@gmail.com>

hid_gos_cfg_remove() calls a mutex before canceling delayed work. That
delayed work function calls mcu_property_out(), which holds the same mutex.
Prevent deadlock my removing the mutex prior to stopping the work.
Additionally, since cancel_delayed_work has the potential to re-arm,
switch to disable_delayed_work.

Fixes: a23f3497bf208c59ad ("HID: hid-lenovo-go-s: Add Lenovo Legion Go S Series HID Driver")
Cc: stable@vger.kernel.org
Signed-off-by: Derek J. Clark <derekjohn.clark@gmail.com>
---
 drivers/hid/hid-lenovo-go-s.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/hid/hid-lenovo-go-s.c b/drivers/hid/hid-lenovo-go-s.c
index 36505d8402ff..8b16fc7d151e 100644
--- a/drivers/hid/hid-lenovo-go-s.c
+++ b/drivers/hid/hid-lenovo-go-s.c
@@ -1442,8 +1442,7 @@ static int hid_gos_cfg_probe(struct hid_device *hdev,
 
 static void hid_gos_cfg_remove(struct hid_device *hdev)
 {
-	guard(mutex)(&drvdata.cfg_mutex);
-	cancel_delayed_work_sync(&drvdata.gos_cfg_setup);
+	disable_delayed_work_sync(&drvdata.gos_cfg_setup);
 	sysfs_remove_groups(&hdev->dev.kobj, top_level_attr_groups);
 	hid_hw_close(hdev);
 	hid_hw_stop(hdev);
-- 
2.55.0


  parent reply	other threads:[~2026-09-14 22:53 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-14 22:52 [PATCH 00/10] HID: hid-lenovo-go-s: Fix various bugs Derek J. Clark
2026-09-14 22:52 ` [PATCH 01/10] HID: hid-lenovo-go-s: Return ret instead of 0 in mcu_property_out() Derek J. Clark
2026-09-14 22:52 ` [PATCH 02/10] HID: hid-lenovo-go-s: Bound stale reply window before reusing send_cmd_complete Derek J. Clark
2026-09-14 22:52 ` Derek J. Clark [this message]
2026-09-14 22:52 ` [PATCH 04/10] HID: hid-lenovo-go-s: Use pm_ptr for reset_resume callback Derek J. Clark
2026-09-14 22:52 ` [PATCH 05/10] HID: hid-lenovo-go-s: Add kobject_uevent notify during reset-resume Derek J. Clark
2026-09-14 22:52 ` [PATCH 06/10] HID: hid-lenovo-go-s: Add suspend function and gate access under bool Derek J. Clark
2026-09-14 22:53 ` [PATCH 07/10] HID: hid-lenovo-go-s: Move attribute init to after device query Derek J. Clark
2026-09-14 22:53 ` [PATCH 08/10] HID: hid-lenovo-go-s: Reorganize and rename hid_gos_cfg Derek J. Clark
2026-09-14 22:53 ` [PATCH 09/10] HID: hid-lenovo-go-s: Move static led_classdev_mc to drvdata struct Derek J. Clark
2026-09-14 22:53 ` [PATCH 10/10] HID: hid-lenovo-go-s: Use devm_kzalloc for drvdata Derek J. Clark

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