From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D4F20C433FE for ; Thu, 9 Sep 2021 11:56:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BB0A86321B for ; Thu, 9 Sep 2021 11:56:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243095AbhIIL5Y (ORCPT ); Thu, 9 Sep 2021 07:57:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:33846 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343582AbhIILzT (ORCPT ); Thu, 9 Sep 2021 07:55:19 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 60C21613DA; Thu, 9 Sep 2021 11:45:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631187908; bh=PkHgKvoyfPY4SUoPcVWWAVmKs/676bv9UplHgoqlefg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KraESyscGO2PodhJMB8N96KGZaJtyK/0DiKDOWU2yoDkUIt7N9ZIBsRhiMXJOW7s4 TEWCjcHxdQKYpHW4aSt7A/BCEDPHYAXJRQF4JEDeMGL56RPFcUe+J0ydkySYegvpJD SWQSTtat49SCfxWa7oLs+klRzfHBL59EZjmq34URgldoFnYYDd98Ht5nb2J58Tc/GS PrkfAdqK6gwb564GTUZLBeGF/2kAjFOvDrWDmmnk6B/cy2m9n4HS0c0FAauj2p4cKE HYLszbaILGx8eZhO+vW9KFEzu9Z1Ydq+0EmAjNG0zTeUwW2D7DD+LtfgfCNDV1afTU 4gwk2/vy83xaQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Chin-Yen Lee , Ping-Ke Shih , Kalle Valo , Sasha Levin , linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.14 185/252] rtw88: use read_poll_timeout instead of fixed sleep Date: Thu, 9 Sep 2021 07:39:59 -0400 Message-Id: <20210909114106.141462-185-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210909114106.141462-1-sashal@kernel.org> References: <20210909114106.141462-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Chin-Yen Lee [ Upstream commit 02a55c0009a55b204e1e5c17295431f0a9e7d3b6 ] In current wow flow, driver calls rtw_wow_fw_start and sleep for 100ms, to wait firmware finish preliminary work and then update the value of WOWLAN_WAKE_REASON register to zero. But later firmware will start wow function with power-saving mode, in which mode the value of WOWLAN_WAKE_REASON register is 0xea. So driver may get 0xea value and return fail. We use read_poll_timeout instead to check the value to avoid this issue. Signed-off-by: Chin-Yen Lee Signed-off-by: Ping-Ke Shih Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20210728014335.8785-2-pkshih@realtek.com Signed-off-by: Sasha Levin --- drivers/net/wireless/realtek/rtw88/wow.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/wow.c b/drivers/net/wireless/realtek/rtw88/wow.c index fc9544f4e5e4..bdccfa70dddc 100644 --- a/drivers/net/wireless/realtek/rtw88/wow.c +++ b/drivers/net/wireless/realtek/rtw88/wow.c @@ -283,15 +283,26 @@ static void rtw_wow_rx_dma_start(struct rtw_dev *rtwdev) static int rtw_wow_check_fw_status(struct rtw_dev *rtwdev, bool wow_enable) { - /* wait 100ms for wow firmware to finish work */ - msleep(100); + int ret; + u8 check; + u32 check_dis; if (wow_enable) { - if (rtw_read8(rtwdev, REG_WOWLAN_WAKE_REASON)) + ret = read_poll_timeout(rtw_read8, check, !check, 1000, + 100000, true, rtwdev, + REG_WOWLAN_WAKE_REASON); + if (ret) goto wow_fail; } else { - if (rtw_read32_mask(rtwdev, REG_FE1IMR, BIT_FS_RXDONE) || - rtw_read32_mask(rtwdev, REG_RXPKT_NUM, BIT_RW_RELEASE)) + ret = read_poll_timeout(rtw_read32_mask, check_dis, + !check_dis, 1000, 100000, true, rtwdev, + REG_FE1IMR, BIT_FS_RXDONE); + if (ret) + goto wow_fail; + ret = read_poll_timeout(rtw_read32_mask, check_dis, + !check_dis, 1000, 100000, false, rtwdev, + REG_RXPKT_NUM, BIT_RW_RELEASE); + if (ret) goto wow_fail; } -- 2.30.2