From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 51BD538A714 for ; Wed, 22 Jul 2026 02:19:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784686751; cv=none; b=LOWBUcGByOcYa6wc0edFsvoGf63pcevRIxZ9Uin+TWO94p0OryKPHgxFltJZJIVhPdq0zxwoCAHErES8rd1D2r64OpIpV8wWXJT8/QhGjzWBQOw0+wBCv2ak1CWkZQmQepv19mih9RFQZWomVuCnzwOApUCZuvu/GIIQ++InVb8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784686751; c=relaxed/simple; bh=fPwXqehTDRMZ3CX0ffSoIWYn3YSPf09qHxQ0DdaUclY=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=Q6nofiyZCCcFbW3kqYwg9Jis3cLabL8UOymlsiEiUjGfi/Q6M03vN1QNxnv3cKtrJrAjfyusBGSWN3UY4g1hKV/rUPu1bKQKzXyUPG9WR6dbwVl/il68e7H5VMbgbwsOjDvbEwYgd0/sZZREDwipYJUCoTbfmtJnWIJTc2skw70= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IYZpwm2X; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IYZpwm2X" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C62971F000E9; Wed, 22 Jul 2026 02:19:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784686749; bh=jXXlFkO+NpqONSwduv1AHH47ZV5KFxLopK4fvsSCukw=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=IYZpwm2XvSQnJe9MC6lK5ASEXYLUCI150SJbFBdQnRPopm3dz6GG5Jcqb9tM4AaRe QeA5DIxWHDRMxEuz4HVZcPbUpCDTo99mIMvY2Q2yjrDApPMQhlUEC1M2ejsWZU6Ufl HgY3d45uZgmZQrEtXw9fH75OTYYSkw5G8P/qWJ6uq5RtIJwW9REXbs6XwkpvqYzSjM EQ473WTV570NzDzaiWF3cafH1iNnFbxlmdC1qXitvsuyiHcRswx+W3/0S41lZdz+rR 1HFLXwFY7ZQeuU/kUhHraBFYxwrwkfRfK610NL7v5cby6wArPBdMteAHV2P5zpLdYG Rj1dMvwxATU8A== From: sashiko-bot@kernel.org Subject: Re: [PATCH] x86/PCI: Disable D3cold on Intel BE200 Wi-Fi on Lenovo IdeaPad Pro 5 14IAH10 Reply-To: sashiko-reviews@lists.linux.dev To: "Nika Krasnova" Cc: linux-pci@vger.kernel.org In-Reply-To: <20260722021321.68902-1-nika@nikableh.moe> References: <20260722021321.68902-1-nika@nikableh.moe> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Wed, 22 Jul 2026 02:19:09 +0000 Message-Id: <20260722021909.C62971F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > On the Lenovo IdeaPad Pro 5 14IAH10, the Intel BE200 Wi-Fi (8086:272b, > iwlwifi) fails to power back on from D3cold after a suspend-to-idle > (s2idle) cycle. On resume the platform reports a successful ACPI D0 > transition, but the device is left unpowered: config space reads back > as 0xffffffff, the firmware reset times out, and the wiphy fails to > resume: >=20 > iwlwifi 0000:01:00.0: power state changed by ACPI to D0 > iwlwifi 0000:01:00.0: restore config 0x2c: 0xffffffff -> 0x00f48086 > ieee80211 phy0: PM: failed to resume async: error -110 >=20 > The device stays unusable until a full power cycle; an iwlwifi module > reload and a PCI remove/rescan do not recover it, confirming the device > is genuinely unpowered rather than in a bad software state. >=20 > Setting the device's d3cold_allowed to 0 keeps it in D3hot across > suspend and resumes reliably, so the platform does not correctly restore > power to the M.2 Wi-Fi slot on the s2idle resume path. This mirrors the > untested-vendor-transition pattern already handled for the Asus B1400 > NVMe (see asus_disable_nvme_d3cold): the reference OS does not appear to > exercise the D3cold->D0 path, so it is left untested. >=20 > Add a DMI-matched fixup that forbids D3cold for the BE200 on this model. > Match on the product rather than the BIOS version so the workaround > survives BIOS updates that do not address the issue. >=20 > Signed-off-by: Nika Krasnova Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260722021321.6890= 2-1-nika@nikableh.moe?part=3D1