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[108.228.232.20]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3339b6036fcsm7789074eec.20.2026.09.04.07.23.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 04 Sep 2026 07:23:34 -0700 (PDT) Date: Fri, 04 Sep 2026 07:23:20 -0700 From: "Derek J. Clark" To: Tristan Madani , Jiri Kosina , Benjamin Tissoires CC: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Tristan Madani , stable@vger.kernel.org Subject: Re: [PATCH] HID: hid-oxp: use cancel_delayed_work_sync() in remove User-Agent: Thunderbird for Android In-Reply-To: <20260904105800.3923987-1-tristmd@gmail.com> References: <20260904105800.3923987-1-tristmd@gmail.com> Message-ID: <949B786B-375B-4F2F-B209-C135EC62E1A5@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On September 4, 2026 3:58:00 AM PDT, Tristan Madani w= rote: >From: Tristan Madani > >oxp_hid_remove() uses cancel_delayed_work() for all three delayed work >items=2E cancel_delayed_work() only dequeues a pending work item without >waiting for a currently executing callback to finish=2E If any of the >work callbacks (oxp_rgb_queue_fn, oxp_btn_queue_fn, oxp_mcu_init_fn) is >running at the time of removal, the callback continues executing >concurrently with hid_hw_close() and hid_hw_stop(), accessing the HID >device after it has been closed and stopped=2E > >Use cancel_delayed_work_sync() instead to ensure that any in-progress >work callback completes before device teardown proceeds=2E > >Fixes: 84910c459d65 ("HID: hid-oxp: Add OneXPlayer configuration driver") >Cc: stable@vger=2Ekernel=2Eorg >Signed-off-by: Tristan Madani Hi Tristan, LGTM, thanks=2E Reviewed-by: Derek J=2E Clark >--- > drivers/hid/hid-oxp=2Ec | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > >diff --git a/drivers/hid/hid-oxp=2Ec b/drivers/hid/hid-oxp=2Ec >index d2ded6b08ce9e=2E=2E1e691ebc1199e 100644 >--- a/drivers/hid/hid-oxp=2Ec >+++ b/drivers/hid/hid-oxp=2Ec >@@ -1552,9 +1552,9 @@ static int oxp_hid_probe(struct hid_device *hdev, >=20 > static void oxp_hid_remove(struct hid_device *hdev) > { >- cancel_delayed_work(&drvdata=2Eoxp_rgb_queue); >- cancel_delayed_work(&drvdata=2Eoxp_btn_queue); >- cancel_delayed_work(&drvdata=2Eoxp_mcu_init); >+ cancel_delayed_work_sync(&drvdata=2Eoxp_rgb_queue); >+ cancel_delayed_work_sync(&drvdata=2Eoxp_btn_queue); >+ cancel_delayed_work_sync(&drvdata=2Eoxp_mcu_init); > hid_hw_close(hdev); > hid_hw_stop(hdev); > }