Received: by 2002:a05:6a10:eb17:0:0:0:0 with SMTP id hx23csp123554pxb; Tue, 7 Sep 2021 19:38:28 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyKoJFkrX4C0uqg0MOdP6JpNVuUaLPurNv+ZCHtTdxV9aBw4Rh0YgVkZ0sxfyXLGYxkDuu4 X-Received: by 2002:a92:d650:: with SMTP id x16mr1144195ilp.253.1631068708681; Tue, 07 Sep 2021 19:38:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1631068708; cv=none; d=google.com; s=arc-20160816; b=G70zyuBFRhrhGU5rN15fvu2xK0ZywB/34LRQHKnQC/rbsoLFV9dJ4Q+vOFqj4j8R9f 3VcreGTtebWgXfNqM6Tz8iBk45dAhuoThQgpH7a6LGdJUi+1aiNd5ls8cbjuywTgzACW TaoTrsmPGQN3Pp96EhEjnsfFobTEHVmXA8gy8COo1d5S0HbnbabJFAnCnlSZnnoyNkB7 IJcAI7z46rHt/SgD+Lebngk15ES6xIm3bRjpg/oJPAKkYexLwx8gNdOEDAAQrFktWFZW waTbDoTkFodXUZbQJ2rx+cEkpJSadjo//Nw50Zt6AQ7Uqx2+MpdqqOpfURFsd+UdJ6My NnIA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:message-id:date:subject:cc:to:from; bh=AQpxsPU1NCsDR7TPctl/byZNJkclUSDkB36TFaGupvs=; b=GzXjguE6oGeoUytMIwrjSSomYJ8RvT0mCnZxyl21CFAtXUUQ88oVzb3MsUiY6Kto48 1PvpUN4FkNE/VS2T4y3zszljzIEXkWhR3JX92J+UEucLgKVopFar7tCFVVd1pcXOJEpb sXHJO/rrmtfltPPrMFnp5yFjPRm8PFfdo/DdoO3Fmrer91As7rSLl2TbY/7OX4Sc7cIT Aikw6o9S7JpiPaQ/98NlLfdrTKuZ3Zn6+DaagzdtxRuMZBlv+x6r0I9W/WH58sMYqlZP uYTZVWVm7t0V5XRvZvieWTwjbFrHbWkzH0eqXmJPGj09ROPS38OqUFcAvY6nW74KGedu qxDA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id d3si801179ilu.98.2021.09.07.19.38.15; Tue, 07 Sep 2021 19:38:28 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346375AbhIHCPd (ORCPT + 99 others); Tue, 7 Sep 2021 22:15:33 -0400 Received: from mga17.intel.com ([192.55.52.151]:61320 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235450AbhIHCPb (ORCPT ); Tue, 7 Sep 2021 22:15:31 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10100"; a="200567464" X-IronPort-AV: E=Sophos;i="5.85,276,1624345200"; d="scan'208";a="200567464" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Sep 2021 19:14:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,276,1624345200"; d="scan'208";a="503326869" Received: from aubrey-ubuntu.sh.intel.com ([10.239.53.132]) by fmsmga008.fm.intel.com with ESMTP; 07 Sep 2021 19:14:22 -0700 From: Aubrey Li To: rjw@rjwysocki.net, pmenzel@molgen.mpg.de Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Aubrey Li , Aubrey Li Subject: [PATCH] ACPI/PRM: Find PRMT table before parse it Date: Wed, 8 Sep 2021 10:09:44 +0800 Message-Id: <1631066984-63501-1-git-send-email-aubrey.li@intel.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Find and verify PRMT table before parse it, this eliminates a warning on machines without PRMT table. [ 7.197173] ACPI: PRMT not present Signed-off-by: Aubrey Li Tested-by: Paul Menzel --- drivers/acpi/prmt.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/prmt.c b/drivers/acpi/prmt.c index 1f6007a..89c22bc 100644 --- a/drivers/acpi/prmt.c +++ b/drivers/acpi/prmt.c @@ -288,10 +288,18 @@ static acpi_status acpi_platformrt_space_handler(u32 function, void __init init_prmt(void) { + struct acpi_table_header *tbl; acpi_status status; - int mc = acpi_table_parse_entries(ACPI_SIG_PRMT, sizeof(struct acpi_table_prmt) + + int mc; + + status = acpi_get_table(ACPI_SIG_PRMT, 0, &tbl); + if (ACPI_FAILURE(status)) + return; + + mc = acpi_table_parse_entries(ACPI_SIG_PRMT, sizeof(struct acpi_table_prmt) + sizeof (struct acpi_table_prmt_header), 0, acpi_parse_prmt, 0); + acpi_put_table(tbl); /* * Return immediately if PRMT table is not present or no PRM module found. */ -- 2.7.4