From patchwork Sat Mar 20 03:40:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gwendal Grignou X-Patchwork-Id: 1456069 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-ide-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256 header.s=google header.b=EerGc4l5; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4F2RQc1QxJz9sVS for ; Sat, 20 Mar 2021 14:42:00 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229880AbhCTDlQ (ORCPT ); Fri, 19 Mar 2021 23:41:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229884AbhCTDkl (ORCPT ); Fri, 19 Mar 2021 23:40:41 -0400 Received: from mail-pl1-x62c.google.com (mail-pl1-x62c.google.com [IPv6:2607:f8b0:4864:20::62c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9FB26C061761 for ; Fri, 19 Mar 2021 20:40:41 -0700 (PDT) Received: by mail-pl1-x62c.google.com with SMTP id w11so3820620ply.6 for ; Fri, 19 Mar 2021 20:40:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=X95aZVgNRGIwLqcQ8UA5WLNr+sNfsuVjI+l5mnSJwWA=; b=EerGc4l5obk9W416NNwM++d3y5fhgJ4WUMkDrMrATjhVW6IQ/e3+LSnqbkk+aGrdQo YPTUs7HALBNjxNPs/Fhvv26/BYSQXHXK9zv8CYpxJ7NpLf4tS0VPpB4kHp3doCTjNs1d ksQP4+cyZJdskZ7OiCvtDx4QMb5eVUv7RpCpw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=X95aZVgNRGIwLqcQ8UA5WLNr+sNfsuVjI+l5mnSJwWA=; b=qbtEZMLPPOcdNspXKanARAzNUDnxMgS16udljUyS4x70ehuShZTvfgN8LrnzM/piT/ Ajqa8ASSn/O5ZpSpPWSYGiuaFwu9j4J+fUyiqQfNadlgTEvvso30ekUeNxFQD4gLDfSf j2LgkcyXhCnYq9SSI6P3/PXnXSghEXTyzi4uHFEBxQTkKakGAyzsJ3+vrAp3O4MoSXDd +PXPtJVwC7+6hYA/xre1Zkf0MfK0oIrw/zKRT3DGg+oqBGNrN8aRggewnl1wEx72JclM qxfu5x/oLhQUjtNNMf/QvOAmadAm5VqFLI9slquDYs6SBZRT0NmRuTsKwek+DyyEq/uM GSLw== X-Gm-Message-State: AOAM5300sZ+jOkK7Yz4S5+aVw5slPShx3OYppNRGyOSqJ3MboBVHiVHj htARc/4vCc7PB8XElFwHh5y2Wg== X-Google-Smtp-Source: ABdhPJzRG3a8JaRVv2usAVXD9RaBhgFBHRLC8ngjV1Z6GGG/mk1YHXtfBYEn8TKYbIqOWofBnlPb5A== X-Received: by 2002:a17:90a:5898:: with SMTP id j24mr1699092pji.103.1616211641238; Fri, 19 Mar 2021 20:40:41 -0700 (PDT) Received: from localhost ([2620:15c:202:201:3471:4d7:22d:5963]) by smtp.gmail.com with UTF8SMTPSA id i10sm11650541pjm.1.2021.03.19.20.40.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 19 Mar 2021 20:40:40 -0700 (PDT) From: Gwendal Grignou To: tj@kernel.org, linux-ide@vger.kernel.org Cc: Gwendal Grignou Subject: [PATCH 2/2] driver: ahci: Disable DLPM on Fizz chromebox Date: Fri, 19 Mar 2021 20:40:33 -0700 Message-Id: <20210320034033.396854-3-gwendal@chromium.org> X-Mailer: git-send-email 2.31.0.291.g576ba9dcdaf-goog In-Reply-To: <20210320034033.396854-1-gwendal@chromium.org> References: <20210320034033.396854-1-gwendal@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org On Chromebox Fizz platform, (HP Chromebox G2, ASUS Chromebox 3, ...), hard CPU freeze were observed when the SSD DLPM is engaged at 'min_power'. Ensure we can not change the |link_power_management_policy| of the host controller connected to the root SSD. (Operation not supported). Signed-off-by: Gwendal Grignou --- drivers/ata/ahci.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 9132201f1353e..4b932bb4ed570 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1270,6 +1270,12 @@ static bool ahci_broken_lpm(struct pci_dev *pdev) */ .driver_data = "20180310", /* 2.35 */ }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Google"), + DMI_MATCH(DMI_BOARD_NAME, "Fizz"), + }, + }, { } /* terminate list */ }; const struct dmi_system_id *dmi = dmi_first_match(sysids);