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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 E2D08C32750 for ; Fri, 2 Aug 2019 09:43:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B4D732086A for ; Fri, 2 Aug 2019 09:43:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564739001; bh=BPj6Fqs5ZKIFZ+NOohujAGFUyRkC3VRVPwhMr31csK0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=XyodVz1sPlz90NkoS1dmVK5ptOLnRb4GwYMdvyWeI3eW4yuVEBYJGIeghId5jutXC m0Jsah9glbG7b/0ifpSwxH1TDhv+c3mmde2xdsEKcWgSvXRXJKRx/2mMhzDl4nsYxp cwSn08ww6xu4Ow2awu4qss8YKrYSHNBx07+X8B5Q= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405018AbfHBJnE (ORCPT ); Fri, 2 Aug 2019 05:43:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:45696 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404847AbfHBJnB (ORCPT ); Fri, 2 Aug 2019 05:43:01 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0A89720880; Fri, 2 Aug 2019 09:42:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564738979; bh=BPj6Fqs5ZKIFZ+NOohujAGFUyRkC3VRVPwhMr31csK0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KLOS+XIx9TEYvuBpD/cM0piV/Vw30KOfdZ8GmFDWMw/bDrAQMzllJxjP91Rhmuryj oNXTo2m1mrRwKTy1JSN4U2SKm4n9J03XWySa1M8VyH9U0SEKWDejkG43OrvtTV1t59 f+lOift6QvVsTJHKRIpN2wog2sya0sa3uqS9WfRM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqing Pan , Kalle Valo , Sasha Levin Subject: [PATCH 4.9 055/223] ath10k: fix PCIE device wake up failed Date: Fri, 2 Aug 2019 11:34:40 +0200 Message-Id: <20190802092242.450580701@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802092238.692035242@linuxfoundation.org> References: <20190802092238.692035242@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ Upstream commit 011d4111c8c602ea829fa4917af1818eb0500a90 ] Observed PCIE device wake up failed after ~120 iterations of soft-reboot test. The error message is "ath10k_pci 0000:01:00.0: failed to wake up device : -110" The call trace as below: ath10k_pci_probe -> ath10k_pci_force_wake -> ath10k_pci_wake_wait -> ath10k_pci_is_awake Once trigger the device to wake up, we will continuously check the RTC state until it returns RTC_STATE_V_ON or timeout. But for QCA99x0 chips, we use wrong value for RTC_STATE_V_ON. Occasionally, we get 0x7 on the fist read, we thought as a failure case, but actually is the right value, also verified with the spec. So fix the issue by changing RTC_STATE_V_ON from 0x5 to 0x7, passed ~2000 iterations. Tested HW: QCA9984 Signed-off-by: Miaoqing Pan Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath10k/hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/hw.c b/drivers/net/wireless/ath/ath10k/hw.c index 675e75d66db2..14dc6548701c 100644 --- a/drivers/net/wireless/ath/ath10k/hw.c +++ b/drivers/net/wireless/ath/ath10k/hw.c @@ -157,7 +157,7 @@ const struct ath10k_hw_values qca6174_values = { }; const struct ath10k_hw_values qca99x0_values = { - .rtc_state_val_on = 5, + .rtc_state_val_on = 7, .ce_count = 12, .msi_assign_ce_max = 12, .num_target_ce_config_wlan = 10, -- 2.20.1