From patchwork Tue Oct 4 14:13:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kurz X-Patchwork-Id: 678127 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3spMHv39rMz9t0t for ; Wed, 5 Oct 2016 01:49:15 +1100 (AEDT) Received: from localhost ([::1]:43191 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1brR1q-0007P0-MJ for incoming@patchwork.ozlabs.org; Tue, 04 Oct 2016 10:49:10 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53700) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1brQTe-0003iC-Cb for qemu-devel@nongnu.org; Tue, 04 Oct 2016 10:13:56 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1brQTX-0004sj-BH for qemu-devel@nongnu.org; Tue, 04 Oct 2016 10:13:49 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:56659) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1brQTX-0004sF-0Y for qemu-devel@nongnu.org; Tue, 04 Oct 2016 10:13:43 -0400 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u94E8tGK007331 for ; Tue, 4 Oct 2016 10:13:41 -0400 Received: from e34.co.us.ibm.com (e34.co.us.ibm.com [32.97.110.152]) by mx0a-001b2d01.pphosted.com with ESMTP id 25vc49xamn-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 04 Oct 2016 10:13:41 -0400 Received: from localhost by e34.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 4 Oct 2016 08:13:38 -0600 Received: from b01cxnp22036.gho.pok.ibm.com (b01cxnp22036.gho.pok.ibm.com [9.57.198.26]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id 07D431FF001F; Tue, 4 Oct 2016 08:13:18 -0600 (MDT) Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u94EDbhw1638672; Tue, 4 Oct 2016 14:13:37 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9624FAC03A; Tue, 4 Oct 2016 10:13:37 -0400 (EDT) Received: from bahia.lab.toulouse-stg.fr.ibm.com (unknown [9.84.40.81]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP id 1CE54AC055; Tue, 4 Oct 2016 10:13:36 -0400 (EDT) From: Greg Kurz To: qemu-devel@nongnu.org Date: Tue, 04 Oct 2016 16:13:36 +0200 User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16100414-0016-0000-0000-000004D6E4CC X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005851; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000186; SDB=6.00764205; UDB=6.00364935; IPR=6.00539965; BA=6.00004783; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012867; XFM=3.00000011; UTC=2016-10-04 14:13:39 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16100414-0017-0000-0000-0000337EDC43 Message-Id: <147559041610.22779.15798454251003046283.stgit@bahia.lab.toulouse-stg.fr.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-10-04_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=3 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1610040240 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH] 9pfs: drop useless check in pdu_free() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Greg Kurz , "Aneesh Kumar K.V" Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Out of the three users of pdu_free(), none ever passes a NULL pointer to this function. Signed-off-by: Greg Kurz --- hw/9pfs/9p.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c index 479b2b260ce8..058588d64121 100644 --- a/hw/9pfs/9p.c +++ b/hw/9pfs/9p.c @@ -626,16 +626,14 @@ V9fsPDU *pdu_alloc(V9fsState *s) void pdu_free(V9fsPDU *pdu) { - if (pdu) { - V9fsState *s = pdu->s; - /* - * Cancelled pdu are added back to the freelist - * by flush request . - */ - if (!pdu->cancelled) { - QLIST_REMOVE(pdu, next); - QLIST_INSERT_HEAD(&s->free_list, pdu, next); - } + V9fsState *s = pdu->s; + /* + * Cancelled pdu are added back to the freelist + * by flush request . + */ + if (!pdu->cancelled) { + QLIST_REMOVE(pdu, next); + QLIST_INSERT_HEAD(&s->free_list, pdu, next); } }