From patchwork Sun May 3 15:26:17 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Fu, Zhonghui" X-Patchwork-Id: 6321021 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 7D00DBEEE1 for ; Sun, 3 May 2015 15:26:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9603A203A4 for ; Sun, 3 May 2015 15:26:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F6E7203AF for ; Sun, 3 May 2015 15:26:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751060AbbECP0Z (ORCPT ); Sun, 3 May 2015 11:26:25 -0400 Received: from mga14.intel.com ([192.55.52.115]:6861 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750815AbbECP0W (ORCPT ); Sun, 3 May 2015 11:26:22 -0400 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga103.fm.intel.com with ESMTP; 03 May 2015 08:26:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,361,1427785200"; d="scan'208";a="689242002" Received: from jche110-mobl1.ccr.corp.intel.com (HELO [10.255.24.157]) ([10.255.24.157]) by orsmga001.jf.intel.com with ESMTP; 03 May 2015 08:26:18 -0700 Message-ID: <55463E19.7070709@linux.intel.com> Date: Sun, 03 May 2015 23:26:17 +0800 From: "Fu, Zhonghui" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: "brudley@broadcom.com" , Arend van Spriel , Franky Lin , "meuleman@broadcom.com" , Kalle Valo , "pieterpg@broadcom.com" , "hdegoede@redhat.com" , "linux-wireless@vger.kernel.org" , "brcm80211-dev-list@broadcom.com" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH v2] brcmfmac: prohibit ACPI power management for brcmfmac driver Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP ACPI will manage WiFi chip's power state during suspend/resume process on some tablet platforms(such as ASUS T100TA). This is not supported by brcmfmac driver now, and the context of WiFi chip will be damaged after resume. This patch informs ACPI not to manage WiFi chip's power state. Signed-off-by: Zhonghui Fu Acked-by: Arend van Spriel --- Changes in v2: - Another implementation. drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c index 9b508bd..6c519e3 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include @@ -1114,6 +1115,8 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func, int err; struct brcmf_sdio_dev *sdiodev; struct brcmf_bus *bus_if; + struct device *dev; + struct acpi_device *adev; brcmf_dbg(SDIO, "Enter\n"); brcmf_dbg(SDIO, "Class=%x\n", func->class); @@ -1121,6 +1124,11 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func, brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); brcmf_dbg(SDIO, "Function#: %d\n", func->num); + /* prohibit ACPI power management for this device */ + dev = &func->dev; + if (adev = ACPI_COMPANION(dev)) + adev->flags.power_manageable = 0; + /* Consume func num 1 but dont do anything with it. */ if (func->num == 1) return 0;