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Sun, 24 May 2026 10:56:02 -0700 (PDT) Received: from localhost.localdomain ([1.226.165.54]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c852058557bsm6080557a12.30.2026.05.24.10.55.58 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 24 May 2026 10:56:02 -0700 (PDT) From: Myeonghun Pak To: Ping Cheng , Jason Gerecke Cc: Jiri Kosina , Benjamin Tissoires , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Myeonghun Pak , stable@vger.kernel.org, Ijae Kim Subject: [PATCH] HID: wacom: stop hardware after post-start probe failures Date: Mon, 25 May 2026 02:53:33 +0900 Message-ID: <20260524175552.1973-1-mhun512@gmail.com> X-Mailer: git-send-email 2.47.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" wacom_parse_and_register() starts HID hardware before registering inputs and initializing pad LEDs/remotes. Those later steps can fail, but their error paths currently release Wacom resources without stopping the HID hardware. Route post-hid_hw_start() failures through hid_hw_stop() before releasing driver resources. This issue was identified during our ongoing static-analysis research while reviewing kernel code. Fixes: c1d6708bf0d3 ("HID: wacom: Do not register input devices until after= hid_hw_start") Cc: stable@vger.kernel.org Co-developed-by: Ijae Kim Signed-off-by: Ijae Kim Signed-off-by: Myeonghun Pak Reviewed-by: Dmitry Torokhov --- drivers/hid/wacom_sys.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c index 0d1c6d90fe..c824d9c224 100644 --- a/drivers/hid/wacom_sys.c +++ b/drivers/hid/wacom_sys.c @@ -2456,16 +2456,16 @@ static int wacom_parse_and_register(struct wacom *w= acom, bool wireless) =20 error =3D wacom_register_inputs(wacom); if (error) - goto fail; + goto fail_hw_stop; =20 if (wacom->wacom_wac.features.device_type & WACOM_DEVICETYPE_PAD) { error =3D wacom_initialize_leds(wacom); if (error) - goto fail; + goto fail_hw_stop; =20 error =3D wacom_initialize_remotes(wacom); if (error) - goto fail; + goto fail_hw_stop; } =20 if (!wireless) { @@ -2496,6 +2496,7 @@ static int wacom_parse_and_register(struct wacom *wac= om, bool wireless) return 0; =20 fail_quirks: +fail_hw_stop: hid_hw_stop(hdev); fail: wacom_release_resources(wacom); --=20 2.47.1