From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 00E091E9914; Wed, 15 Jan 2025 10:46:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736937961; cv=none; b=ic5J+vylgwdEAl9GAp15ramOwKDF8KqBN0BNrIN+p8Jj37RpTfYvwbkadhTY74Q7TMw2Kybe2tCJy/20RIeHZXRSqXYnvM9dQnyOHkj07h8C0oCPmgPpnjB72N31WwFgLDDpQ9hgbO93DysLmr2WogRcYK6pufjpRK4dDOmPI5U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736937961; c=relaxed/simple; bh=pKDYZ4qi9ZFh28pXm53S0K3UoARwG+0H28+DJu9v6pY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ibqmsSx5xCYXW/5yDq3Oztui4qCd8tGxg93Msnz9QAFIetCpW1QhsfLzdejQnPyp9kPpB/j8eGkUmzGBuGm5A//ylJuThkiqwcMNbJEJfW04Jvrq7ubjS6V0si/DUOTD31MtDxLLLn6bfAhl21TvNO17TIl7gd5bDEABwqcGS0c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=PQ8ZLoDl; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="PQ8ZLoDl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 67480C4CEDF; Wed, 15 Jan 2025 10:46:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1736937960; bh=pKDYZ4qi9ZFh28pXm53S0K3UoARwG+0H28+DJu9v6pY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PQ8ZLoDlpVHzXvkTLKW6mgoGMftB29RFNryIgfB2i56L7kK1+YhZqk3+toizTRYft NiUZDzno+g3CjUq7W5vKcZ9sTUuOfZyQ8bkLsXz1txVOdtyRqS6Gqd42daGauuoCnJ vl/jEqSXPtSlB5nEmbTPW2wrgRPEa2GCZgSe6e5E= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Neeraj Sanjay Kale , Luiz Augusto von Dentz , Sasha Levin Subject: [PATCH 6.12 043/189] Bluetooth: btnxpuart: Fix driver sending truncated data Date: Wed, 15 Jan 2025 11:35:39 +0100 Message-ID: <20250115103608.081219217@linuxfoundation.org> X-Mailer: git-send-email 2.48.0 In-Reply-To: <20250115103606.357764746@linuxfoundation.org> References: <20250115103606.357764746@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Neeraj Sanjay Kale [ Upstream commit 8023dd2204254a70887f5ee58d914bf70a060b9d ] This fixes the apparent controller hang issue seen during stress test where the host sends a truncated payload, followed by HCI commands. The controller treats these HCI commands as a part of previously truncated payload, leading to command timeouts. Adding a serdev_device_wait_until_sent() call after serdev_device_write_buf() fixed the issue. Fixes: 689ca16e5232 ("Bluetooth: NXP: Add protocol support for NXP Bluetooth chipsets") Signed-off-by: Neeraj Sanjay Kale Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Sasha Levin --- drivers/bluetooth/btnxpuart.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c index 5ea0d23e88c0..a028984f2782 100644 --- a/drivers/bluetooth/btnxpuart.c +++ b/drivers/bluetooth/btnxpuart.c @@ -1336,6 +1336,7 @@ static void btnxpuart_tx_work(struct work_struct *work) while ((skb = nxp_dequeue(nxpdev))) { len = serdev_device_write_buf(serdev, skb->data, skb->len); + serdev_device_wait_until_sent(serdev, 0); hdev->stat.byte_tx += len; skb_pull(skb, len); -- 2.39.5