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: 10920565 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 5B7311515 for ; Sun, 28 Apr 2019 02:17:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4AB35287F4 for ; Sun, 28 Apr 2019 02:17:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3E3D428988; Sun, 28 Apr 2019 02:17:40 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E6088287F4 for ; Sun, 28 Apr 2019 02:17:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=jdqLfybxhoMcJMs1YvD51osXgSq7oWgbEqv9mtWq3lM=; b=R8d pYny1yaE7vNE6w/rpCEp7bQnItBOqR2nILpJLXG4ucMW4msqoEI/zcSKmagCft+ORBGbM23Bkoowf hvnujZ/ZE4vHypAG92Vp0erzxeAd6Z3/6HiZEogw8Vezv8PqZzXhbSAnVqXX9ElC3sPJGwo2TgXhk y8eAeqI+B8ty+XpLERR0HG/wbV0PqUIU44t3Y2AwWfAd9GihJ0JV0quHOJLi/C++bNpClp4IoKhv4 8sF1yw2SLrSTBf5swkLPB+5Ox1/I6fQXJXmLFHtTM6CQ0uufjEsbZS81trsyan7Pjn4a4ShrzkrLf CD1U1pNTE9/lNpa6IlTpsyH7HN8+aDA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hKZNZ-0000Sv-KB; Sun, 28 Apr 2019 02:17:21 +0000 Received: from smtp.codeaurora.org ([198.145.29.96]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hKZNX-0000Sd-0p for ath10k@lists.infradead.org; Sun, 28 Apr 2019 02:17:20 +0000 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 0686D604B4; 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190427_191719_083837_BD57ADF9 X-CRM114-Status: UNSURE ( 8.43 ) X-CRM114-Notice: Please train this message. X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org MIME-Version: 1.0 Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.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;