From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (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 5FC313DA5C4; Fri, 20 Mar 2026 17:59:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774029543; cv=none; b=RwXTOF22zwRal5gfJNNhWJwK72lUkVmC56WbMHqHIPf8YNTz1cbgMRLSu7Vys+QM9f1KkTdy444uEa9zY06mzq5iZSQ2aKbfQOIyY48delW6GD6ZoyHFfu6nN+riOCZOILUlRVtytIiYYicYBTn55L4Yd+cezigD2VvUO7jT8G4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774029543; c=relaxed/simple; bh=1u8BxdByVk4O+osWK2qdls0t4zAfFZHG562xkZw83Ic=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=iCEyQ69ttCRVyYXaVVaDDu8ltxdoRENy+MpLtJdVkmiVJLYDweZbNYza2+CTiZxNGFaki3fYXZ7aU3jcMbkF2fenFBqvwK6sZxQhukgTFP3tQAIxwEALL3kSS7dg9LT6zWNwfuMo2SHyCzhEjfkZdzeXEYMQdA9YRrAKXcSMj0w= 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=RgDe06fr; arc=none smtp.client-ip=192.198.163.19 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="RgDe06fr" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774029541; x=1805565541; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=1u8BxdByVk4O+osWK2qdls0t4zAfFZHG562xkZw83Ic=; b=RgDe06frkR8rHFF6xbUjVuSXHaRgbEJUQsDVCfsRRnu1l7vJZJyVaaRz m8UtzafNg846RZto6HU2/QCraSzbSCssjebZ9lr7cbPAUMV1HqozSQIwr yJNubGvq1se0Z3fpR6a3u8rXZVvnZHk5/autSANeEqm91TYY7cPCcJtb1 mozUDNFIvAr7sUVW5MFjjWZt8ialaZoU96SpVSTq8GLxv90SOLPs36sFX 1vp483KcWHZ+pDINpgzVPF+FrVv+tgRw7DlVILCB4Z4inVr5GlLJ9DGM6 /cD8P5V6eODGpoHS5wg0vmtreTD/c+9KTGfGI6IooaBLH40BBvwD2LJU/ g==; X-CSE-ConnectionGUID: +AS6h/qcQNmPt7OMQvVAdA== X-CSE-MsgGUID: W/IFiwtESzOf6dW5G21F2A== X-IronPort-AV: E=McAfee;i="6800,10657,11735"; a="74137886" X-IronPort-AV: E=Sophos;i="6.23,130,1770624000"; d="scan'208";a="74137886" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Mar 2026 10:59:01 -0700 X-CSE-ConnectionGUID: HtgDhIWLTgOU1VZ3FT6Pvw== X-CSE-MsgGUID: Efmy/k3ITIKZqmybLaIB8g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,130,1770624000"; d="scan'208";a="222452464" Received: from black.igk.intel.com ([10.91.253.5]) by orviesa006.jf.intel.com with ESMTP; 20 Mar 2026 10:58:59 -0700 Received: by black.igk.intel.com (Postfix, from userid 1003) id 6464598; Fri, 20 Mar 2026 18:58:58 +0100 (CET) Date: Fri, 20 Mar 2026 18:58:58 +0100 From: Andy Shevchenko To: Nelson Johnson Cc: linux-mmc@vger.kernel.org, adrian.hunter@intel.com, ulf.hansson@linaro.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/3] mmc: sdhci-pci: disable aggressive runtime PM for Braswell SD on Lenovo N22 Message-ID: References: <20260316212325.4207-1-nzjfr547@gmail.com> <20260316212325.4207-2-nzjfr547@gmail.com> Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260316212325.4207-2-nzjfr547@gmail.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo On Mon, Mar 16, 2026 at 04:23:23PM -0500, Nelson Johnson wrote: > Lenovo N22 systems with the Braswell SD controller (PCI ID 8086:2296) regress on kernels newer than 4.9. v4.9 > On this machine the SD slot is exposed through both PCI and ACPI firmware nodes, and enabling the newer aggressive runtime PM/card-detect wake path causes the controller to stop behaving like the older working configuration. > > Keep the Lenovo N22 on the pre-4.14 behavior by skipping MMC_CAP_AGGRESSIVE_PM and MMC_CAP_CD_WAKE for the 8086:2296 slot on this DMI match, and disable runtime PM for that host. > > This preserves the rest of the Braswell/Atom handling while restoring the power-management behavior that allows the slot to function on the Lenovo N22. When creating the commit message you need to wrap the lines around ~72 characters per line. -- With Best Regards, Andy Shevchenko