From patchwork Thu Sep 8 13:29:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 604041 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7985FC6FA82 for ; Thu, 8 Sep 2022 13:29:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232431AbiIHN3s (ORCPT ); Thu, 8 Sep 2022 09:29:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232402AbiIHN3O (ORCPT ); Thu, 8 Sep 2022 09:29:14 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 730D181B00; Thu, 8 Sep 2022 06:29:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1662643752; x=1694179752; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=iMp9w4wgPvBJFcprqiqbm816Nf5nzWcjGT/HX2kTYFE=; b=GsMmKkCtlCjuuF/zSeuF0ZMWHRiWiYz66eUAFBdwx3fobXIoFMB2BlKY gWvVUlmEVYo97gp6r/r07/IPoRcTgmX9xX11RmPscLDjfNaqCT4BY4Z2P lKPxrBWIh3XCVPEFsUm/TxLaFWbqVfFUqjwr4LvSJPLBiPfIZnJBs9Ncs Ip1gRoNSmcrSlud/8ZfTFvdYpYMQ93Hyly/whyizw3hwqRwHzevY1K7Z0 Zdo7zBnJIrWDHcpxBO7/qxx9tdTkx0rubCCMX/GqwehkfbfABp8/B1cE9 8cjpZntpBPqMrjvE6Gg7o5ykBI6ig1S07JQ8/WlwYNLmPncAcBl7vBeSy A==; X-IronPort-AV: E=McAfee;i="6500,9779,10464"; a="284189185" X-IronPort-AV: E=Sophos;i="5.93,300,1654585200"; d="scan'208";a="284189185" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Sep 2022 06:29:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,300,1654585200"; d="scan'208";a="610693628" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga007.jf.intel.com with ESMTP; 08 Sep 2022 06:29:04 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 1A0726D1; Thu, 8 Sep 2022 16:29:13 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , Hans de Goede , "Rafael J. Wysocki" , Ard Biesheuvel , Mark Brown , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-spi@vger.kernel.org, devel@acpica.org Cc: "Rafael J. Wysocki" , Len Brown , Elie Morisse , Nehal Shah , Shyam Sundar S K , Khalil Blaiech , Andy Gross , Bjorn Andersson , Konrad Dybcio , Will Deacon , Mark Rutland , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Robert Moore , Wolfram Sang Subject: [PATCH v2 8/8] efi/dev-path-parser: Refactor _UID handling to use acpi_dev_uid_to_integer() Date: Thu, 8 Sep 2022 16:29:10 +0300 Message-Id: <20220908132910.62122-9-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220908132910.62122-1-andriy.shevchenko@linux.intel.com> References: <20220908132910.62122-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org ACPI utils provide acpi_dev_uid_to_integer() helper to extract _UID as an integer. Use it instead of custom approach. Signed-off-by: Andy Shevchenko Reviewed-by: Ard Biesheuvel --- drivers/firmware/efi/dev-path-parser.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/firmware/efi/dev-path-parser.c b/drivers/firmware/efi/dev-path-parser.c index eb9c65f97841..f80d87c199c3 100644 --- a/drivers/firmware/efi/dev-path-parser.c +++ b/drivers/firmware/efi/dev-path-parser.c @@ -15,9 +15,11 @@ static long __init parse_acpi_path(const struct efi_dev_path *node, struct device *parent, struct device **child) { - char hid[ACPI_ID_LEN], uid[11]; /* UINT_MAX + null byte */ struct acpi_device *adev; struct device *phys_dev; + char hid[ACPI_ID_LEN]; + u64 uid; + int ret; if (node->header.length != 12) return -EINVAL; @@ -27,12 +29,12 @@ static long __init parse_acpi_path(const struct efi_dev_path *node, 'A' + ((node->acpi.hid >> 5) & 0x1f) - 1, 'A' + ((node->acpi.hid >> 0) & 0x1f) - 1, node->acpi.hid >> 16); - sprintf(uid, "%u", node->acpi.uid); for_each_acpi_dev_match(adev, hid, NULL, -1) { - if (adev->pnp.unique_id && !strcmp(adev->pnp.unique_id, uid)) + ret = acpi_dev_uid_to_integer(adev, &uid); + if (ret == 0 && node->acpi.uid == uid) break; - if (!adev->pnp.unique_id && node->acpi.uid == 0) + if (ret == -ENODATA && node->acpi.uid == 0) break; } if (!adev)