From patchwork Mon May 10 15:14:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 12248473 X-Patchwork-Delegate: nbd@nbd.name 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham 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 C9944C433ED for ; Mon, 10 May 2021 15:16:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 94DBC6120D for ; Mon, 10 May 2021 15:16:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236890AbhEJPRT (ORCPT ); Mon, 10 May 2021 11:17:19 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:58505 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S238956AbhEJPQK (ORCPT ); Mon, 10 May 2021 11:16:10 -0400 X-UUID: 006f526ac05e428982fbd65242d0c1a4-20210510 X-UUID: 006f526ac05e428982fbd65242d0c1a4-20210510 Received: from mtkmrs01.mediatek.inc [(172.21.131.159)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1293285783; Mon, 10 May 2021 23:15:00 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs02n1.mediatek.inc (172.21.101.77) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 10 May 2021 23:14:58 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 10 May 2021 23:14:58 +0800 From: To: , CC: , , , , , , , , , , , , , , , Subject: [PATCH 3/9] mt76: connac: fw_own rely on all packet memory all being free Date: Mon, 10 May 2021 23:14:51 +0800 Message-ID: <1620659697-12048-3-git-send-email-sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1620659697-12048-1-git-send-email-sean.wang@mediatek.com> References: <1620659697-12048-1-git-send-email-sean.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Sean Wang If the device is MMIO-based, we must ensure all TxD/TxP on the host memory all being consumed by the device prior to safely switching to fw_own state. Fixes: ec7bd7b4a9c0 ("mt76: connac: check wake refcount in mcu_fw_pmctrl") Reviewed-by: Lorenzo Bianconi Signed-off-by: Sean Wang --- drivers/net/wireless/mediatek/mt76/mt76_connac.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h index 2b1150bf8d3d..a588d2c39870 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h @@ -133,8 +133,12 @@ mt76_connac_pm_unref(struct mt76_connac_pm *pm) static inline bool mt76_connac_skip_fw_pmctrl(struct mt76_phy *phy, struct mt76_connac_pm *pm) { + struct mt76_dev *dev = phy->dev; bool ret; + if (dev->token_count) + return true; + spin_lock_bh(&pm->wake.lock); ret = pm->wake.count || test_and_set_bit(MT76_STATE_PM, &phy->state); spin_unlock_bh(&pm->wake.lock);