From patchwork Tue Jul 16 16:42:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 11046479 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 C57F8746 for ; Tue, 16 Jul 2019 16:42:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B4BF52860A for ; Tue, 16 Jul 2019 16:42:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A7C3528610; Tue, 16 Jul 2019 16:42:49 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 924E82860A for ; Tue, 16 Jul 2019 16:42:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388125AbfGPQmr (ORCPT ); Tue, 16 Jul 2019 12:42:47 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:40409 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388101AbfGPQmr (ORCPT ); Tue, 16 Jul 2019 12:42:47 -0400 Received: by mail-pg1-f195.google.com with SMTP id w10so9714984pgj.7 for ; Tue, 16 Jul 2019 09:42:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=G0ynwreDQx55Cdn2k1+KVcd1p88/D0r6svcv1QlBO3o=; b=irjFbOPzoCsmoIZq13YOds5hccWx9OiE071z79slMWaKwUnr0Gw8NqkCvXGuxofvkE b2DbVQ8khrwbZ1fgtJzGUdLN3xC5o1VqML1rE0tFczdIs5fX+WoRn0m64ZSj09uLaKp8 W4JTJ5GuZwoocTLDXiTmbxT27wq8MYbdfM4/8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=G0ynwreDQx55Cdn2k1+KVcd1p88/D0r6svcv1QlBO3o=; b=q+9oCw9VDxlgizU7FNAWGPfRxf1FMTwbm0O15cWoq/7EwRGlsR2fnQK3Y0N7t1d10K 2MazYPtOcDUHLRJkyJ60GgLGJMiwTILQhgrEB2hxNX4z3gBHh+Q9TNP2Vrsvoig3raD/ lx2R/UJzlnZOCsRiQEPG2TR/Jt+XoKioDZZfVjuHUUTxO/sDkkzYbKA6SqgTQ4xe0YZZ pzv3hWmu+SBhMT5QGUOQz8g4ZUdWWfYOVWYKJsaribqOFJrDioqv9EQpALKIM8CvIHPJ 7D4qYYaHjmorsG1OAtXRQOsosaG0XYC4oOtvhq4UH3c0eCJDmvhRD0UKAiIhqc20OR+Z iUWA== X-Gm-Message-State: APjAAAXx46NB9qnKMS8+3pJGq3dQszRFHmX6euirW1XKij+L6vVMxATp MSnZ+r7Ei/HCOK905dVyMUMTeg== X-Google-Smtp-Source: APXvYqxTvrAricfH4zSCJjfNseyILhC1mVPFZVt33bDXH1vSrEY0L19EpCl6w3rTFJO8Jdf66uAxVQ== X-Received: by 2002:a17:90a:cf8f:: with SMTP id i15mr36366127pju.110.1563295366371; Tue, 16 Jul 2019 09:42:46 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id r1sm25456468pfq.100.2019.07.16.09.42.45 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 16 Jul 2019 09:42:45 -0700 (PDT) From: Douglas Anderson To: Ulf Hansson , Kalle Valo , Adrian Hunter Cc: Ganapathi Bhat , linux-wireless@vger.kernel.org, Brian Norris , Amitkumar Karwar , linux-rockchip@lists.infradead.org, Wolfram Sang , Nishant Sarmukadam , netdev@vger.kernel.org, Avri Altman , linux-mmc@vger.kernel.org, davem@davemloft.net, Xinming Hu , Douglas Anderson , linux-kernel@vger.kernel.org Subject: [PATCH 2/2] mwifiex: Make use of the new sdio_trigger_replug() API to reset Date: Tue, 16 Jul 2019 09:42:09 -0700 Message-Id: <20190716164209.62320-3-dianders@chromium.org> X-Mailer: git-send-email 2.22.0.510.g264f2c817a-goog In-Reply-To: <20190716164209.62320-1-dianders@chromium.org> References: <20190716164209.62320-1-dianders@chromium.org> MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP As described in the patch ("mmc: core: Add sdio_trigger_replug() API"), the current mwifiex_sdio_card_reset() is broken in the cases where we're running Bluetooth on a second SDIO func on the same card as WiFi. The problem goes away if we just use the sdio_trigger_replug() API call. NOTE: Even though with this new solution there is less of a reason to do our work from a workqueue (the unplug / plug mechanism we're using is possible for a human to perform at any time so the stack is supposed to handle it without it needing to be called from a special context), we still need a workqueue because the Marvell reset function could called from a context where sleeping is invalid and thus we can't claim the host. One example is Marvell's wakeup_timer_fn(). Signed-off-by: Douglas Anderson Reviewed-by: Brian Norris --- drivers/net/wireless/marvell/mwifiex/sdio.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 24c041dad9f6..f77ad2615f08 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -2218,14 +2218,6 @@ static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) { struct sdio_mmc_card *card = adapter->card; struct sdio_func *func = card->func; - int ret; - - mwifiex_shutdown_sw(adapter); - - /* power cycle the adapter */ - sdio_claim_host(func); - mmc_hw_reset(func->card->host); - sdio_release_host(func); /* Previous save_adapter won't be valid after this. We will cancel * pending work requests. @@ -2233,9 +2225,9 @@ static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags); clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags); - ret = mwifiex_reinit_sw(adapter); - if (ret) - dev_err(&func->dev, "reinit failed: %d\n", ret); + sdio_claim_host(func); + sdio_trigger_replug(func); + sdio_release_host(func); } /* This function read/write firmware */