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 smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0472AC433F5 for ; Wed, 18 May 2022 04:02:27 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id B691440534; Wed, 18 May 2022 04:02:26 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9wGqyjbUegqb; Wed, 18 May 2022 04:02:26 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp2.osuosl.org (Postfix) with ESMTPS id 7A8334051E; Wed, 18 May 2022 04:02:25 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 5CA3FC0032; Wed, 18 May 2022 04:02:25 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8B2DDC002D for ; Wed, 18 May 2022 04:02:23 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 7A6F283372 for ; Wed, 18 May 2022 04:02:23 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp1.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SYnRQu0g9TSZ for ; Wed, 18 May 2022 04:02:23 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by smtp1.osuosl.org (Postfix) with ESMTPS id D428F8328E for ; Wed, 18 May 2022 04:02:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1652846541; 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: in-reply-to:in-reply-to:references:references; bh=kh5bzm9uSUhv1Ghb3VPdW30fst72Lni+h8xDpA05+tI=; b=cC39TiyRqftDwVzmf9tBKrVX9jifPFrQHFtD54k/yaSmW461yvXVtrGjmiYfZQQb+x1ttL nxBYtWeBKDVc31r6n8bZ5B4Jya4bYYRRNe7H1qM8wZDLWiAaA6G6lVMGamuWIsWKHWSxYg ZmKd+RSPE5VAQMDJIADxisXpz8YARS8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-664-JJ1sQGsIN3Cu-0r6Xxjjxg-1; Wed, 18 May 2022 00:02:18 -0400 X-MC-Unique: JJ1sQGsIN3Cu-0r6Xxjjxg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7C41A811E7A; Wed, 18 May 2022 04:02:17 +0000 (UTC) Received: from localhost.localdomain (ovpn-14-27.pek2.redhat.com [10.72.14.27]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2BA461121314; Wed, 18 May 2022 04:02:05 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH V5 9/9] virtio: use WARN_ON() to warn illegal status value Date: Wed, 18 May 2022 11:59:51 +0800 Message-Id: <20220518035951.94220-10-jasowang@redhat.com> In-Reply-To: <20220518035951.94220-1-jasowang@redhat.com> References: <20220518035951.94220-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 Cc: lulu@redhat.com, paulmck@kernel.org, linux-s390@vger.kernel.org, peterz@infradead.org, maz@kernel.org, cohuck@redhat.com, Peter Oberparleiter , pasic@linux.ibm.com, eperezma@redhat.com, Vineeth Vijayan , tglx@linutronix.de X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" We used to use BUG_ON() in virtio_device_ready() to detect illegal status value, this seems sub-optimal since the value is under the control of the device. Switch to use WARN_ON() instead. Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: "Paul E. McKenney" Cc: Marc Zyngier Cc: Halil Pasic Cc: Cornelia Huck Cc: Vineeth Vijayan Cc: Peter Oberparleiter Cc: linux-s390@vger.kernel.org Signed-off-by: Jason Wang --- include/linux/virtio_config.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index d4edfd7d91bb..9a36051ceb76 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -255,7 +255,7 @@ void virtio_device_ready(struct virtio_device *dev) { unsigned status = dev->config->get_status(dev); - BUG_ON(status & VIRTIO_CONFIG_S_DRIVER_OK); + WARN_ON(status & VIRTIO_CONFIG_S_DRIVER_OK); /* * The virtio_synchronize_cbs() makes sure vring_interrupt() -- 2.25.1 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization