From patchwork Fri May 29 12:33:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 11580191 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 71B3C913 for ; Sat, 30 May 2020 09:42:26 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 57FD1207DF for ; Sat, 30 May 2020 09:42:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 57FD1207DF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E640E6E9C2; Sat, 30 May 2020 09:42:15 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 13CAA89F41; Fri, 29 May 2020 12:33:22 +0000 (UTC) IronPort-SDR: iqqS54Bu776Gs22riHvGBdpvdYnzeqZmn+YO8PfbgLlGx0RiFbSucf3hV8exErsPJuBmxfTw9I AmDLzrOl/WIw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 May 2020 05:33:21 -0700 IronPort-SDR: BH8cx+3xgrjE2I/A+UZDj1fS2eA+3s+/PeyvoU5yUDuOW2JZwAkkAAeK5uWjfg2fQ9QrlsI/wc 5J4tTI4APi+Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,448,1583222400"; d="scan'208";a="303113842" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga008.jf.intel.com with ESMTP; 29 May 2020 05:33:19 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 3CB2EFC; Fri, 29 May 2020 15:33:17 +0300 (EEST) From: Andy Shevchenko To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , intel-gfx@lists.freedesktop.org, Daniel Vetter , dri-devel@lists.freedesktop.org Subject: [PATCH v1] drm/i915/dsi: Drop double check for ACPI companion device Date: Fri, 29 May 2020 15:33:17 +0300 Message-Id: <20200529123317.20470-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-Mailman-Approved-At: Sat, 30 May 2020 09:42:14 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andy Shevchenko Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" acpi_dev_get_resources() does perform the NULL pointer check against ACPI companion device which is given as function parameter. Thus, there is no need to duplicate this check in the caller. Signed-off-by: Andy Shevchenko --- drivers/gpu/drm/i915/display/intel_dsi_vbt.c | 24 ++++++++------------ 1 file changed, 10 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c index 574dcfec9577..6f9e08cda964 100644 --- a/drivers/gpu/drm/i915/display/intel_dsi_vbt.c +++ b/drivers/gpu/drm/i915/display/intel_dsi_vbt.c @@ -426,23 +426,19 @@ static void i2c_acpi_find_adapter(struct intel_dsi *intel_dsi, { struct drm_device *drm_dev = intel_dsi->base.base.dev; struct device *dev = &drm_dev->pdev->dev; - struct acpi_device *acpi_dev; + struct acpi_device *acpi_dev = ACPI_COMPANION(dev); struct list_head resource_list; struct i2c_adapter_lookup lookup; - acpi_dev = ACPI_COMPANION(dev); - if (acpi_dev) { - memset(&lookup, 0, sizeof(lookup)); - lookup.slave_addr = slave_addr; - lookup.intel_dsi = intel_dsi; - lookup.dev_handle = acpi_device_handle(acpi_dev); - - INIT_LIST_HEAD(&resource_list); - acpi_dev_get_resources(acpi_dev, &resource_list, - i2c_adapter_lookup, - &lookup); - acpi_dev_free_resource_list(&resource_list); - } + memset(&lookup, 0, sizeof(lookup)); + lookup.slave_addr = slave_addr; + lookup.intel_dsi = intel_dsi; + lookup.dev_handle = acpi_device_handle(acpi_dev); + + INIT_LIST_HEAD(&resource_list); + acpi_dev_get_resources(acpi_dev, &resource_list, + i2c_adapter_lookup, &lookup); + acpi_dev_free_resource_list(&resource_list); } #else static inline void i2c_acpi_find_adapter(struct intel_dsi *intel_dsi,