From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) (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 34F683F329D for ; Mon, 31 Aug 2026 11:38:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788176323; cv=none; b=A1pJd4/UazTwpOe1Gxe+kThe6fhoRczE6Eiz32u6DGLmsy8+EHpeYUCnRy82UskeM7f5QxY4rs8A8un9stBPCQK67TCkWJAVri4xjpvDON6QvRQ0uy/dwElqGvFlzuDusLp5TC3tXzCcpcejDLdEhnIqf96zznAgoPETPfZSDBs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788176323; c=relaxed/simple; bh=GmxuKM3Dnre8HSR4Ltvylx5sp6fCdJ/dwIyDTk+Iw/s=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=OzlIzBtfyQEVSmmV4qnZkPJZJkJ2wmF5OUsKi/2hY7bRRBrzxWdSxZ7ZfmwBbceg1xF5IcnvKH0EABmaiE1U7YleDcKwUM9uBwEWplMufZRL6OWjQ3+i++9lE3wogUejEXI+NG13iwY5yThdR1WhTrUJ1qWmtLXkG+FPG0/YqAw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=RzSOPxnD; arc=none smtp.client-ip=192.198.163.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="RzSOPxnD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788176322; x=1819712322; h=from:subject:date:message-id:mime-version: content-transfer-encoding:to:cc; bh=GmxuKM3Dnre8HSR4Ltvylx5sp6fCdJ/dwIyDTk+Iw/s=; b=RzSOPxnD+vjMRFzygJhUp7qn9ySxl/R6VafnwwcANKbpvpettYysygjx 4E3Ydx5w3FDL9m4apOtEWH+8jMKhKeGTQXFMAfdtM582M14vfzHk4qOWj Hj6ooQ1+6CdOMt9Wu0BLaLN39EAt5VpvicfeE1N2ceqxeb9JBXIGbVb11 3s63Yvagfb/ocIZtylvlLIF9IxdR4Y0K95otdTCu2HsG4T6wRWpozCEJI 8On3/ExTxfEo37Mp2b2ZHAX9pvLFfEPtV9bboqveFbet4tgRKfTnIa3lt I+TlGX0kW81T4Hd2ipDFYb4H2D7Xn4Ha2YJzQRbfs/w/5FbiPHMlPhSDF g==; X-CSE-ConnectionGUID: 3oG67IN2QoK+jg2PVMqT8w== X-CSE-MsgGUID: vnddGRetROOQmYYXDV7CXg== X-IronPort-AV: E=McAfee;i="6800,10657,11891"; a="76129318" X-IronPort-AV: E=Sophos;i="6.25,254,1779174000"; d="scan'208";a="76129318" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2026 04:38:41 -0700 X-CSE-ConnectionGUID: QemgHv+aQj+p/h29AP2w0w== X-CSE-MsgGUID: BjMoKkyGQLi/RoVGYN6COQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,254,1779174000"; d="scan'208";a="262645102" Received: from sannilnx-dsk.jer.intel.com (HELO [127.0.1.1]) ([10.12.231.107]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2026 04:38:40 -0700 From: Alexander Usyskin Subject: [PATCH char-misc-next 0/4] mei: csc: add and enable polling option Date: Mon, 31 Aug 2026 14:38:30 +0300 Message-Id: <20260831-cri_polling-v1-0-d927315e6598@intel.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: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/x3MSwqAMAwA0atI1gbaCv6uIiJSUw1olVSkIN7d6 nIWb24IJEwB2uwGoYsD7z6FzjOwy+hnQp5Sg1GmVHWh0QoPx76u7GdsjKXKNarUzkASh5Dj+N+ 6jwtuHCx6iif0z/MCZMS3YW0AAAA= X-Change-ID: 20260831-cri_polling-92ce7f9061f2 To: Arnd Bergmann , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, Alexander Usyskin , Menachem Adin X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1788176320; l=935; i=alexander.usyskin@intel.com; s=20260315; h=from:subject:message-id; bh=GmxuKM3Dnre8HSR4Ltvylx5sp6fCdJ/dwIyDTk+Iw/s=; b=M7vDlS9Z+ifgVYLG3ld04uGFAmUn4iveUAoI8mF6+u+e2r68BL/eBbUPyIVVl2cUFhk3clFKp 7jfpgrYUNkMCJWqgeInAbc6aR1c3P+f7iECWGzZ4ZGjvCCW4TriN57y X-Developer-Key: i=alexander.usyskin@intel.com; a=ed25519; pk=X+qoF/nFCdDOV04IForWSxnkyoCAbUE10egZi6PSfcU= Add polling option for CSC hardware with not working interrupt line. Enable it by default as current hardware is broken. Fix common mei-me polling code to avoid stalls and access to powered down hardware. Signed-off-by: Alexander Usyskin --- Alexander Usyskin (4): mei: make polling wait interruptible mei: csc: add option for polling and enable it mei: me: avoid hw access in polling when not active mei: me: reduce active polling timeout to 20 ms drivers/misc/mei/gsc-me.c | 2 +- drivers/misc/mei/hw-me.c | 99 +++++++++++++++++++++++++++------------------- drivers/misc/mei/pci-csc.c | 71 +++++++++++++++++++++++++-------- 3 files changed, 115 insertions(+), 57 deletions(-) --- base-commit: 45c13f3f9e3bb15fd89ff2864c6f627a3b4b4229 change-id: 20260831-cri_polling-92ce7f9061f2 Best regards, -- Alexander Usyskin