From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 508AE207A32; Sun, 1 Mar 2026 01:17:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772327825; cv=none; b=VuPVoVpOBykn8kzsLa2d3XLe8tzwWmn8AZ4EvnjcEExwJvyWsUsKILc00hFtqe/JZV3Bc63bPHAi2r2LrbhRFhOSXQoEvXt5js+l9lrOEKVBQWZAaBmCIrbG3eAUs1/jTyOT5B/jbZBPl0XTm7H1tvFs2E5qXeO0yz3AxBnrq6M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772327825; c=relaxed/simple; bh=x9qs5BZNYmkmUXV41y0KEx9ZYOMew/fE5gQQXaKz2Eg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=o7PO2D/Bo7xlfLA69trwEJ4k3V/glWR8/avw4bJExSdtdID1+YOz3b/3XT1GVRjVMlv2Edhle3/9vJxdNCjhtL0Xn8eFC5Yk105/EiljDMmMhTdjwmI/tY4QgmxEHdjCzudgdMba7ub4GE1sP7zQ3T7BUl9Z88LIYJTPGPUXlNM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dt+SESX7; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dt+SESX7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4F40C19421; Sun, 1 Mar 2026 01:17:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772327825; bh=x9qs5BZNYmkmUXV41y0KEx9ZYOMew/fE5gQQXaKz2Eg=; h=From:To:Cc:Subject:Date:From; b=dt+SESX7hEjLHCck8Cj/58XdYwaCKToSaeZcJ2+bxbgg+9WfACfOgyk8nL5vvD+e9 THYml6+Xdk52tf2VLnAn2eDWIENEAbCakIiFAorr8kSbpTS6Tsj+zZApbEE4l78yGo vh5I894Ix4wAjZKDPeYwmuVZVDo84ndcXFjHW31FxLdUpSfrc/ag6ElP+dd+LX8zla lEjKOlh/VVuwAYnXFtHWBHNppRg3PIrbznmFA/RjHH39H8C1cxSqxd8yZPotG2TX9J YGsgsCd38uZ2IGfeGl59zGvE2QHr09dYGL/8RNcLJf+fqFaK2+8KJqnBClQ2ZsLqah WZCYqFCMtgC+Q== From: Sasha Levin To: stable@vger.kernel.org, ii4gsp@gmail.com Cc: Dmitry Torokhov , linux-input@vger.kernel.org Subject: FAILED: Patch "Input: synaptics_i2c - guard polling restart in resume" failed to apply to 6.18-stable tree Date: Sat, 28 Feb 2026 20:17:03 -0500 Message-ID: <20260301011703.1670858-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.18-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 870c2e7cd881d7a10abb91f2b38135622d9f9f65 Mon Sep 17 00:00:00 2001 From: Minseong Kim Date: Wed, 21 Jan 2026 10:02:02 -0800 Subject: [PATCH] Input: synaptics_i2c - guard polling restart in resume synaptics_i2c_resume() restarts delayed work unconditionally, even when the input device is not opened. Guard the polling restart by taking the input device mutex and checking input_device_enabled() before re-queuing the delayed work. Fixes: eef3e4cab72ea ("Input: add driver for Synaptics I2C touchpad") Signed-off-by: Minseong Kim Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260121063738.799967-1-ii4gsp@gmail.com Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/synaptics_i2c.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/synaptics_i2c.c b/drivers/input/mouse/synaptics_i2c.c index c8ddfff2605ff..29da66af36d74 100644 --- a/drivers/input/mouse/synaptics_i2c.c +++ b/drivers/input/mouse/synaptics_i2c.c @@ -615,13 +615,16 @@ static int synaptics_i2c_resume(struct device *dev) int ret; struct i2c_client *client = to_i2c_client(dev); struct synaptics_i2c *touch = i2c_get_clientdata(client); + struct input_dev *input = touch->input; ret = synaptics_i2c_reset_config(client); if (ret) return ret; - mod_delayed_work(system_dfl_wq, &touch->dwork, - msecs_to_jiffies(NO_DATA_SLEEP_MSECS)); + guard(mutex)(&input->mutex); + if (input_device_enabled(input)) + mod_delayed_work(system_dfl_wq, &touch->dwork, + msecs_to_jiffies(NO_DATA_SLEEP_MSECS)); return 0; } -- 2.51.0