From patchwork Tue Aug 27 09:30:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Felix Fietkau X-Patchwork-Id: 13779189 X-Patchwork-Delegate: nbd@nbd.name Received: from nbd.name (nbd.name [46.4.11.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2628718D65C for ; Tue, 27 Aug 2024 09:55:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.4.11.11 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724752518; cv=none; b=sNfQbGbXnUr6Ikt0fPb8mbH9Se6oDJY6Vv6+VcnJzdkP13J2SS9Sb3ROohjhaDC4Cx7Crn89nJ6SE7hs1gXZw9/MfEmp1TjqDq8XqbmedxTksMh8499OMb0WhXkokT+X3zhN1ydhxMrTXpx6QBFyJn+CIhNij7jQswV59VHV3tY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724752518; c=relaxed/simple; bh=S0XxveRF2iDI/aZYwPiwQMR7d90OjsEqrQpi4ZChoPo=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eTkrKi5qGVCoo0dNFjFX9i6/g6kiXcd97m8ZUhJ2UxnG8xIUKQlZGGWrBSxFhyezvm41oc9rsrQOJ9sK4DHFLUq/X0o24jn+0eLf7kVZvIy++Luy0LUT0+x8k2hVgD1VXcceaKvSrTsKiRBYdkb4rBdfNhaO4QFHEcuxMYOkM4Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nbd.name; spf=none smtp.mailfrom=nbd.name; dkim=pass (1024-bit key) header.d=nbd.name header.i=@nbd.name header.b=gBKq2Vc1; arc=none smtp.client-ip=46.4.11.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nbd.name Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=nbd.name Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=nbd.name header.i=@nbd.name header.b="gBKq2Vc1" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=nbd.name; s=20160729; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Sender:Reply-To:Cc:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=Jgc6++jZ0CKlhNJqXWO3G/2sI1Z9XrUS+vPiS8LYKrA=; b=gBKq2Vc1dSa1tlh0vfrfcs1jod JsxZBadD2O+/yuLNECyAZXmZK9mJERmcA7Jz1ycY/fwr12dF1CvD6lw4xblEaGZ/rLIeC2yodVbFi Uc15cCN1aO0kSGGUv6Qa/Htash+UhsZeJtX92NLe0vFHewzZ602SFQEszjHXqknvRZdw=; Received: from p57a6f9a5.dip0.t-ipconnect.de ([87.166.249.165] helo=localhost.localdomain) by ds12 with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (Exim 4.96) (envelope-from ) id 1sisWm-004Ww8-2B for linux-wireless@vger.kernel.org; Tue, 27 Aug 2024 11:30:16 +0200 From: Felix Fietkau To: linux-wireless@vger.kernel.org Subject: [PATCH v2 15/24] wifi: mt76: mt7915: reset the device after MCU timeout Date: Tue, 27 Aug 2024 11:30:02 +0200 Message-ID: <20240827093011.18621-15-nbd@nbd.name> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240827093011.18621-1-nbd@nbd.name> References: <20240827093011.18621-1-nbd@nbd.name> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On MT7915, MCU hangs do not trigger watchdog interrupts, so they can only be detected through MCU message timeouts. Ensure that the hardware gets restarted when that happens in order to prevent a permanent stuck state. Signed-off-by: Felix Fietkau --- drivers/net/wireless/mediatek/mt76/mt7915/mcu.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c index 0cde1b3c7d41..81375b5d0021 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c @@ -157,12 +157,21 @@ static int mt7915_mcu_parse_response(struct mt76_dev *mdev, int cmd, struct sk_buff *skb, int seq) { + struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76); struct mt76_connac2_mcu_rxd *rxd; int ret = 0; if (!skb) { dev_err(mdev->dev, "Message %08x (seq %d) timeout\n", cmd, seq); + + if (!test_and_set_bit(MT76_MCU_RESET, &dev->mphy.state)) { + dev->recovery.restart = true; + wake_up(&dev->mt76.mcu.wait); + queue_work(dev->mt76.wq, &dev->reset_work); + wake_up(&dev->reset_wait); + } + return -ETIMEDOUT; }