From patchwork Sun Apr 28 02:17:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Gong X-Patchwork-Id: 10920563 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 96C311515 for ; Sun, 28 Apr 2019 02:17:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7CFFA287F4 for ; Sun, 28 Apr 2019 02:17:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7151228988; Sun, 28 Apr 2019 02:17:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C33D4287F4 for ; Sun, 28 Apr 2019 02:17:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726242AbfD1CRT (ORCPT ); Sat, 27 Apr 2019 22:17:19 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:58212 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726079AbfD1CRS (ORCPT ); Sat, 27 Apr 2019 22:17:18 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 1B2D560117; Sun, 28 Apr 2019 02:17:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1556417838; bh=8Z+Xnff/4eQbJDrCB2cyLkFo5QwmntY2rBb88/5s6/w=; h=From:To:Cc:Subject:Date:From; b=QMVjQORQpcRmNxlA+iV2lrKpMz99SPQ3qaRfK0lLouTdOpP3JIt3e+AnYu7mO0337 qxP9KH7WYZFCDvPBJ9o/Vpqy7bELusuIWArBjVqW+XrEmMh7kwxU8Y2GoHH8d/kyvy uu1PUsN8D8vOtYq3Dv8nq/oTo7Bc2MMSGolQvG90= Received: from localhost.localdomain (unknown [180.166.53.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: wgong@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id ADCE4601B4; Sun, 28 Apr 2019 02:17:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1556417837; bh=8Z+Xnff/4eQbJDrCB2cyLkFo5QwmntY2rBb88/5s6/w=; h=From:To:Cc:Subject:Date:From; b=Yjn7zJOtiQjwCNgf+VYIr0Y8z7rbb0hxohTorJSOp22cb7sxphk62zBxcHtExUh4o JgDkBbYNsQyKjPEuQsCSPiw4Rm3dfUL63oBXo4SSrMJrMXekSsoWS6RV0Quxp+/Onq pjsGkakcZvq0y1lt8vV/HtSVbdZoBSjRFdRJDxxU= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org ADCE4601B4 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=wgong@codeaurora.org From: Wen Gong To: ath10k@lists.infradead.org Cc: linux-wireless@vger.kernel.org Subject: [PATCH] ath10k: remove mmc_hw_reset while hif power down Date: Sun, 28 Apr 2019 10:17:05 +0800 Message-Id: <1556417825-13713-1-git-send-email-wgong@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For sdio 3.0 chip, the clock will drop from 200M Hz to 50M Hz after load ath10k driver, it is because mmc_hw_reset will reset the sdio's power, then mmc will consider it as sdio 2.0 and drop the clock. Remove mmc_hw_reset will avoid the drop of clock. Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1. Signed-off-by: Wen Gong --- drivers/net/wireless/ath/ath10k/sdio.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c index fae56c6..f1d2af8 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.c +++ b/drivers/net/wireless/ath/ath10k/sdio.c @@ -1433,10 +1433,6 @@ static void ath10k_sdio_hif_power_down(struct ath10k *ar) return; } - ret = mmc_hw_reset(ar_sdio->func->card->host); - if (ret) - ath10k_warn(ar, "unable to reset sdio: %d\n", ret); - sdio_release_host(ar_sdio->func); ar_sdio->is_disabled = true;