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,URIBL_BLOCKED,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 B1642C432C0 for ; Tue, 19 Nov 2019 05:46:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8948D2075E for ; Tue, 19 Nov 2019 05:46:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574142409; bh=JMzbT0jpHdIV1pZ8eUDKVYmn7oMS7LIGuRRUm5UaNrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jy5ougcdh7OVK6eldTJCvnqbfWN0I4jAjZ8WbjGQE+IfNEfBam3zoj9PAC0OzW5Kk WvNPNFSb/gY4ArsVWgpKV+SubgElu/C8bl9/FyUKQG0lIcsGp8+LPu3PT8DtKdF9tq QWwFIpgfpIHF8DB8xcK074O7u24c8fcEwuUtQgIo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731154AbfKSFqs (ORCPT ); Tue, 19 Nov 2019 00:46:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:42964 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731128AbfKSFqq (ORCPT ); Tue, 19 Nov 2019 00:46:46 -0500 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 2DBD32075E; Tue, 19 Nov 2019 05:46:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574142405; bh=JMzbT0jpHdIV1pZ8eUDKVYmn7oMS7LIGuRRUm5UaNrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tJlk2pi0hfnIfS2PckIXQFdEwbLVu4k2lE2B7T79l0zgs5IBdelmm/F8WR58iKtq0 SfzyXz/C8AEex3yKf2f0nt32dZ+pA7MhqLBkYpp/Rwm8w+6EPSGBMGByznE5VX3++J maeQV4Gv8CMpmS9StpPgK+FpievA1N0LtU2Rz6t0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Erik Stromdahl , Kalle Valo , Sasha Levin Subject: [PATCH 4.14 069/239] ath10k: wmi: disable softirqs while calling ieee80211_rx Date: Tue, 19 Nov 2019 06:17:49 +0100 Message-Id: <20191119051312.930008187@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191119051255.850204959@linuxfoundation.org> References: <20191119051255.850204959@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 From: Erik Stromdahl [ Upstream commit 37f62c0d5822f631b786b29a1b1069ab714d1a28 ] This is done in order not to trig the below warning in ieee80211_rx_napi: WARN_ON_ONCE(softirq_count() == 0); ieee80211_rx_napi requires that softirq's are disabled during execution. The High latency bus drivers (SDIO and USB) sometimes call the wmi ep_rx_complete callback from non softirq context, resulting in a trigger of the above warning. Calling ieee80211_rx_ni with softirq's already disabled (e.g., from softirq context) should be safe as the local_bh_disable and local_bh_enable functions (called from ieee80211_rx_ni) are fully reentrant. Signed-off-by: Erik Stromdahl Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/ath10k/wmi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index ab8eb9cdfda0f..4d6c2986c40dd 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -2414,7 +2414,8 @@ int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb) status->freq, status->band, status->signal, status->rate_idx); - ieee80211_rx(ar->hw, skb); + ieee80211_rx_ni(ar->hw, skb); + return 0; } -- 2.20.1