From patchwork Sat Mar 20 03:40:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gwendal Grignou X-Patchwork-Id: 1456070 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=RwtOvO5x; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4F2RQd1m8Yz9sWV for ; Sat, 20 Mar 2021 14:42:01 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229879AbhCTDlP (ORCPT ); Fri, 19 Mar 2021 23:41:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229883AbhCTDkk (ORCPT ); Fri, 19 Mar 2021 23:40:40 -0400 Received: from mail-pg1-x52e.google.com (mail-pg1-x52e.google.com [IPv6:2607:f8b0:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50A6FC061761 for ; Fri, 19 Mar 2021 20:40:40 -0700 (PDT) Received: by mail-pg1-x52e.google.com with SMTP id r17so4977808pgi.0 for ; Fri, 19 Mar 2021 20:40:40 -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=miJiQ4iKYG8UwvADzlTSpMJaTYGcIVqdAwKgXjUDpzE=; b=RwtOvO5xaIOoHQVcxinJmMu5Xvsi7T4JUNQDluZkNaZkhVEx2gVHcwEL1dq0JnYu6U Xl03Huypv2mkFeWoBBRUddJdOGcSshpnzuZbCRSuckBYGoHbiD7Q/ztpD7qL8MCxOs3P 0i951uTdDjOMqm3aQDPrt1qTOppfgin3hhEXU= 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=miJiQ4iKYG8UwvADzlTSpMJaTYGcIVqdAwKgXjUDpzE=; b=lTDj1D5yyXAkZZ0pOIJWkQgFDmAFEALTaHSiNzFSESZCJhuWerdMjIk5KW+VhvOxrE wAUO6mvvWQuDyww1IluTCTYWeaxOjuMH5bFGiyZ3RCxRhzybYt6fo4iXF7MXEKVG6bUj Mu6WSfyc3b46YAqcUWCd1/SM9KI8Ye0GHkWgjAoXWJ9/kpdXOfvl46zSC23Tsi/gQJoh jBmd4blfcSKTc0cehjIxjaK4XXsNwdW54KuO5jxtoIT0p80qQCMS8m6R+S+HQsaaFJ3+ JgATUJIfFV6TES+H+rMYUgR1yHgcXTFP0Bd0v2Gz+y65PrbOI0Gqr9M8G+MO1EcpEqgY BGFw== X-Gm-Message-State: AOAM530G+yZrdXcxRkBNL4iB/5Lew6QYbx0Cn6o9Eq0bL+7tmM4izYZs OY+0HSqimklt1sLtYctM6lzwZQ== X-Google-Smtp-Source: ABdhPJzP7OoUD8JtPT5gWX7JZXcXrWR23KXKW0o2A1eFXmxyhRQsNimqZsvri/hExa1PgLs6GiXBYA== X-Received: by 2002:a63:df10:: with SMTP id u16mr14147186pgg.308.1616211639942; Fri, 19 Mar 2021 20:40:39 -0700 (PDT) Received: from localhost ([2620:15c:202:201:3471:4d7:22d:5963]) by smtp.gmail.com with UTF8SMTPSA id w79sm6941613pfc.87.2021.03.19.20.40.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 19 Mar 2021 20:40:39 -0700 (PDT) From: Gwendal Grignou To: tj@kernel.org, linux-ide@vger.kernel.org Cc: Gwendal Grignou Subject: [PATCH 1/2] driver: ahci: Allow disabling dlpm for all bios version Date: Fri, 19 Mar 2021 20:40:32 -0700 Message-Id: <20210320034033.396854-2-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 In ahci_broken_lpm(), dmi->driver_data is encoded as a date: if the date of the current BIOS is older than driver_data, the LPM horkage is not applied. Allow dmi->driver_data is be empty in case a problem is not fixed in any BIOS version. Signed-off-by: Gwendal Grignou --- drivers/ata/ahci.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 5f1f049063dd2..9132201f1353e 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1279,6 +1279,9 @@ static bool ahci_broken_lpm(struct pci_dev *pdev) if (!dmi) return false; + if (!dmi->driver_data) + return true; + dmi_get_date(DMI_BIOS_DATE, &year, &month, &date); snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);