From patchwork Sun Sep 27 19:48:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 289533 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=-7.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 50A49C47420 for ; Sun, 27 Sep 2020 19:57:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1A4F723A33 for ; Sun, 27 Sep 2020 19:57:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="vuP6S8UX"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="LxBnZ/3k" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726868AbgI0T5T (ORCPT ); Sun, 27 Sep 2020 15:57:19 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:40678 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726869AbgI0T5N (ORCPT ); Sun, 27 Sep 2020 15:57:13 -0400 Message-Id: <20200927194920.214592677@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601236630; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=9orafjgYKDlDKEG62n274dWmcmLVLFnX3OlrGfMTV/Q=; b=vuP6S8UXSfNxWHGc7Yb2QTKmLAxUiHJyEitt9UbeznGeTfFpoA4hIKR0wXAjx9ERlKFh9W B3bju1K9kWHZBkDD4J7eFPdctXUZRyh96hhl3Tx1GvWD8Y/XyJWWryMdeorFYWMQDKrTL5 kqEzzHZXGSW+yc33fKh0Hu2PgYS+NeHki6h+C1HvVyfClaaDmUPPyP0mJ9LvLSPNglIAuo ijVHzC9fe4+qCIeoRmB8/Z/YabntsJvY9IgF8P8zl9mXgHpPjJZSKLDCF9g88NWv4FcmbF /sN3MaPfnUFBZt+Ua6vxU4jIFoZjJgzrGe8Wmt35MCdWxPI91VOXLcu/jEI4vQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601236630; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=9orafjgYKDlDKEG62n274dWmcmLVLFnX3OlrGfMTV/Q=; b=LxBnZ/3kK2Kn1E01Ma+vj2UE6c25FltAkOE1MjniUMmLf0trqgyT+SHySRxbhxfte+GZQe x6hYcFF/6UZwDWAA== Date: Sun, 27 Sep 2020 21:48:50 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Linus Torvalds , Paul McKenney , Matthew Wilcox , Sebastian Andrzej Siewior , "David S. Miller" , Jakub Kicinski , Luc Van Oostenryck , netdev@vger.kernel.org, Christian Benvenuti , Govindarajulu Varadarajan <_govind@gmx.com>, Dave Miller , Jonathan Corbet , Mauro Carvalho Chehab , linux-doc@vger.kernel.org, Jay Cliburn , Chris Snook , Vishal Kulkarni , Jeff Kirsher , intel-wired-lan@lists.osuosl.org, Shannon Nelson , Pensando Drivers , Andrew Lunn , Heiner Kallweit , Russell King , Thomas Bogendoerfer , Solarflare linux maintainers , Edward Cree , Martin Habets , Jon Mason , Daniel Drake , Ulrich Kunitz , Kalle Valo , linux-wireless@vger.kernel.org, linux-usb@vger.kernel.org, Greg Kroah-Hartman , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-Hsien Lin , Wright Feng , brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list@cypress.com, Stanislav Yakovlev , Stanislaw Gruszka , Johannes Berg , Emmanuel Grumbach , Luca Coelho , Intel Linux Wireless , Jouni Malinen , Amitkumar Karwar , Ganapathi Bhat , Xinming Hu , libertas-dev@lists.infradead.org, Pascal Terjan , Ping-Ke Shih Subject: [patch 04/35] net: caif: Use netif_rx_any_context() References: <20200927194846.045411263@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Sebastian Andrzej Siewior The usage of in_interrupt() in non-core code is phased out. Ideally the information of the calling context should be passed by the callers or the functions be split as appropriate. cfhsi_rx_desc() and cfhsi_rx_pld() use in_interrupt() to distinguish if they should use netif_rx() or netif_rx_ni() for receiving packets. The attempt to consolidate the code by passing an arguemnt or by distangling it failed due lack of knowledge about this driver and because the call chains are hard to follow. As a stop gap use netif_rx_any_context() which invokes the correct code path depending on context and confines the in_interrupt() usage to core code. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Cc: "David S. Miller" Cc: Jakub Kicinski Cc: Luc Van Oostenryck Cc: netdev@vger.kernel.org --- drivers/net/caif/caif_hsi.c | 19 ++----------------- 1 file changed, 2 insertions(+), 17 deletions(-) --- a/drivers/net/caif/caif_hsi.c +++ b/drivers/net/caif/caif_hsi.c @@ -458,15 +458,7 @@ static int cfhsi_rx_desc(struct cfhsi_de skb_reset_mac_header(skb); skb->dev = cfhsi->ndev; - /* - * We are in a callback handler and - * unfortunately we don't know what context we're - * running in. - */ - if (in_interrupt()) - netif_rx(skb); - else - netif_rx_ni(skb); + netif_rx_any_context(skb); /* Update network statistics. */ cfhsi->ndev->stats.rx_packets++; @@ -587,14 +579,7 @@ static int cfhsi_rx_pld(struct cfhsi_des skb_reset_mac_header(skb); skb->dev = cfhsi->ndev; - /* - * We're called in callback from HSI - * and don't know the context we're running in. - */ - if (in_interrupt()) - netif_rx(skb); - else - netif_rx_ni(skb); + netif_rx_any_context(skb); /* Update network statistics. */ cfhsi->ndev->stats.rx_packets++;