From patchwork Wed Jul 12 04:22:55 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cyril Bur X-Patchwork-Id: 786986 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3x6m9S4DYQz9s7h for ; Wed, 12 Jul 2017 14:26:20 +1000 (AEST) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3x6m9S3N8bzDqmp for ; Wed, 12 Jul 2017 14:26:20 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3x6m6Y0yQNzDqjd for ; Wed, 12 Jul 2017 14:23:48 +1000 (AEST) Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v6C4NjPL111015 for ; Wed, 12 Jul 2017 00:23:46 -0400 Received: from e23smtp02.au.ibm.com (e23smtp02.au.ibm.com [202.81.31.144]) by mx0a-001b2d01.pphosted.com with ESMTP id 2bncj4r8x8-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 12 Jul 2017 00:23:45 -0400 Received: from localhost by e23smtp02.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 12 Jul 2017 14:23:37 +1000 Received: from d23relay09.au.ibm.com (202.81.31.228) by e23smtp02.au.ibm.com (202.81.31.208) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Wed, 12 Jul 2017 14:23:34 +1000 Received: from d23av06.au.ibm.com (d23av06.au.ibm.com [9.190.235.151]) by d23relay09.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v6C4NVc023461968 for ; Wed, 12 Jul 2017 14:23:31 +1000 Received: from d23av06.au.ibm.com (localhost [127.0.0.1]) by d23av06.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v6C4NUlX007236 for ; Wed, 12 Jul 2017 14:23:31 +1000 Received: from ozlabs.au.ibm.com (ozlabs.au.ibm.com [9.192.253.14]) by d23av06.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id v6C4NUq0007231; Wed, 12 Jul 2017 14:23:30 +1000 Received: from camb691.ozlabs.ibm.com (haven.au.ibm.com [9.192.254.114]) (using TLSv1.2 with cipher DHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id 7139CA034A; Wed, 12 Jul 2017 14:23:30 +1000 (AEST) From: Cyril Bur To: linuxppc-dev@lists.ozlabs.org, linux-mtd@lists.infradead.org Subject: [PATCH v3 01/10] mtd: powernv_flash: Use WARN_ON_ONCE() rather than BUG_ON() Date: Wed, 12 Jul 2017 14:22:55 +1000 X-Mailer: git-send-email 2.13.2 In-Reply-To: <20170712042304.19745-1-cyrilbur@gmail.com> References: <20170712042304.19745-1-cyrilbur@gmail.com> X-TM-AS-MML: disable x-cbid: 17071204-0004-0000-0000-00000226EE68 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17071204-0005-0000-0000-00005E0B670D Message-Id: <20170712042304.19745-2-cyrilbur@gmail.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-07-11_13:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1706020000 definitions=main-1707120068 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stewart@linux.vnet.ibm.com, alistair@popple.id.au, dwmw2@infradead.org, rlippert@google.com Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" BUG_ON() should be reserved in situations where we can not longer guarantee the integrity of the system. In the case where powernv_flash_async_op() receives an impossible op, we can still guarantee the integrity of the system. Signed-off-by: Cyril Bur Acked-by: Balbir Singh --- drivers/mtd/devices/powernv_flash.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/devices/powernv_flash.c b/drivers/mtd/devices/powernv_flash.c index f5396f26ddb4..a9a20c00687c 100644 --- a/drivers/mtd/devices/powernv_flash.c +++ b/drivers/mtd/devices/powernv_flash.c @@ -78,7 +78,8 @@ static int powernv_flash_async_op(struct mtd_info *mtd, enum flash_op op, rc = opal_flash_erase(info->id, offset, len, token); break; default: - BUG_ON(1); + WARN_ON_ONCE(1); + return -EIO; } if (rc != OPAL_ASYNC_COMPLETION) {