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 EB8B52FC89C; Sun, 1 Mar 2026 01:51:35 +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=1772329896; cv=none; b=kMDMm9Y221EeuOU66/QcGcF0/AIqzXXGA2Age804mlHdKwkhgu5IrGTDWJODTfhDdNKRiddctEgNPdEBZ/vCemKfEOvVMIc9y6BeNko16n7+ZHs2k7Ri0XjXOXvzVZeM2ND5+qdFN3KiCgLiXSULNoPi2yOZtpuAfSMu4f8eMG8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772329896; c=relaxed/simple; bh=4mooUjkFYtVwuPe1sqeZO0h770fCHiODOMfNXps+jHc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=LLa3gURD+1j59LSsLnqUEvBMjSI7S+dR3Yw2NtyvUJOrzVGr4+GtYN+yuHo0biiLT55Urk6U1V9TnSCWQY5EEBEoTC8/D8QVpnABLYrdD/JJMrHE9AQ/RU0YSU6/cXFparrE19wsPHKT9xDyQXDI2DF0FF5Obz5NFuAqttbczao= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Pk+IbEzN; 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="Pk+IbEzN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5AAF6C19421; Sun, 1 Mar 2026 01:51:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772329895; bh=4mooUjkFYtVwuPe1sqeZO0h770fCHiODOMfNXps+jHc=; h=From:To:Cc:Subject:Date:From; b=Pk+IbEzN+ZoxMklqFavmZVNm0tPOSIkXDpKlRlRuDHwjAzylRxSOlQXSEXPxNhsn4 bRxtjHkNCtGBSGHATWPdA15QlgwFr4XzRaeGYJRnfrcJlIlRJNgU5IRwyO7sLI+EI7 E2fBGJSBzKOgdw1wbbalHaakG5ravi8h0tH8FhCHspz/aCWseqydSwB45uMTA6L0wJ dCz2U07daOVu7MqsL9PPdps8KqINJoZUrVmDsNwV7GRCgKOMS4dpZ/QDbVbmb2Jl+r NgsE3pmmeRzMrh91NYuzvZ2RPnUqHEHrIMsixiq26UbNa+VGWfyJFrcv0SaXeQsILk 7Ism71A1MZoqQ== 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 5.15-stable tree Date: Sat, 28 Feb 2026 20:51:33 -0500 Message-ID: <20260301015134.1717924-1-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 5.15-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