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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 177EBC7EE23 for ; Mon, 8 May 2023 10:18:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234375AbjEHKSv (ORCPT ); Mon, 8 May 2023 06:18:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48646 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234358AbjEHKSu (ORCPT ); Mon, 8 May 2023 06:18:50 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4828CD062 for ; Mon, 8 May 2023 03:18:49 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C59FC62500 for ; Mon, 8 May 2023 10:18:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB696C433D2; Mon, 8 May 2023 10:18:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683541128; bh=jpupAkuoIR9JZhgmPqEtxcQHV2WSoE1rm0Idsw6o3cc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MX72uQ0fdpry29vkko0NrS4QRiA6vMI6eJoMXbdiE38kr88fLDpabkMqotoIZoJSy 5aMCdP8YtRdpH12AuKkNUUsLmA+NbXBgzVHTq25EwsJ2qHRpN0RqWRfLmoRyLuftTb tH5LAr3yQsnuNhX8Y/NHKmgxYVMsj6Xa5Ht5FQcM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kalle Valo , Kalle Valo , Sasha Levin Subject: [PATCH 6.2 015/663] wifi: ath11k: reduce the MHI timeout to 20s Date: Mon, 8 May 2023 11:37:21 +0200 Message-Id: <20230508094428.923924854@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094428.384831245@linuxfoundation.org> References: <20230508094428.384831245@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Kalle Valo [ Upstream commit cf5fa3ca0552f1b7ba8490de40700bbfb6979b17 ] Currently ath11k breaks after hibernation, the reason being that ath11k expects that the wireless device will have power during suspend and the firmware will continue running. But of course during hibernation the power from the device is cut off and firmware is not running when resuming, so ath11k will fail. (The reason why ath11k needs the firmware running is the interaction between mac80211 and MHI stack, it's a long story and more info in the bugzilla report.) In SUSE kernels the watchdog timeout is reduced from the default 120 to 60 seconds: CONFIG_DPM_WATCHDOG_TIMEOUT=60 But as the ath11k MHI timeout is 90 seconds the kernel will crash before will ath11k will recover in resume callback. To avoid the crash reduce the MHI timeout to just 20 seconds. Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.9 Link: https://bugzilla.kernel.org/show_bug.cgi?id=214649 Signed-off-by: Kalle Valo Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230329162038.8637-1-kvalo@kernel.org Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath11k/mhi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c index 86995e8dc9135..a62ee05c54097 100644 --- a/drivers/net/wireless/ath/ath11k/mhi.c +++ b/drivers/net/wireless/ath/ath11k/mhi.c @@ -16,7 +16,7 @@ #include "pci.h" #include "pcic.h" -#define MHI_TIMEOUT_DEFAULT_MS 90000 +#define MHI_TIMEOUT_DEFAULT_MS 20000 #define RDDM_DUMP_SIZE 0x420000 static struct mhi_channel_config ath11k_mhi_channels_qca6390[] = { -- 2.39.2