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[2001:b011:380f:3c42:f8f8:a260:49a8:d1ed]) by smtp.gmail.com with ESMTPSA id r75sm1524386pfc.18.2019.08.27.23.22.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Aug 2019 23:22:21 -0700 (PDT) From: Kai-Heng Feng Content-Type: text/plain; charset=utf-8; delsp=yes; format=flowed Content-Transfer-Encoding: 8bit Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: Alps touchpad generates IRQ storm after S3 Message-Id: <44F93018-5F13-4932-A5AC-9D288CDF68DD@canonical.com> Date: Wed, 28 Aug 2019 14:22:18 +0800 Cc: Mario Limonciello , "open list:HID CORE LAYER" , Linux Kernel Mailing List To: masaki.ota@jp.alps.com X-Mailer: Apple Mail (2.3445.104.11) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Masaki, The Alps touchpad (044E:1220) on Dell Precision 7530 causes IRQ storm after system suspend (S3). Commit "HID: i2c-hid: Don't reset device upon system resume” which solves the same issue for other vendors, cause the issue on Alps touchpad. So I’d like to know the correct command Alps touchpad expects after system resume. Also Cc Mario because this could relate to BIOS. Kai-Heng