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Mon, 19 Sep 2022 06:30:47 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2EF704C04E; Mon, 19 Sep 2022 06:34:43 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8D4734C040; Mon, 19 Sep 2022 06:34:42 +0000 (GMT) Received: from [9.171.62.75] (unknown [9.171.62.75]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 19 Sep 2022 06:34:42 +0000 (GMT) Message-ID: Date: Mon, 19 Sep 2022 08:34:42 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 Subject: Re: [PATCH linux-next] KVM: s390: pci: fix comparing pointer to 0 Content-Language: en-US To: cgel.zte@gmail.com, mjrosato@linux.ibm.com Cc: farman@linux.ibm.com, frankja@linux.ibm.com, imbrenda@linux.ibm.com, david@redhat.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, svens@linux.ibm.com, linux-s390@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Xu Panda , Zeal Robot References: <20220918143603.209974-1-xu.panda@zte.com.cn> From: Christian Borntraeger In-Reply-To: <20220918143603.209974-1-xu.panda@zte.com.cn> Content-Type: text/plain; charset=UTF-8; format=flowed X-TM-AS-GCONF: 00 X-Proofpoint-GUID: ndWqoLP3kLZrLLYyrqFcrqY_bk5P-y-c X-Proofpoint-ORIG-GUID: mMOVYsgg0l2EJ4wIW74QWNhIgNGWtBg1 Content-Transfer-Encoding: 7bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-19_03,2022-09-16_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 mlxscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 priorityscore=1501 spamscore=0 malwarescore=0 clxscore=1011 mlxlogscore=935 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2209190042 X-Spam-Status: No, score=-5.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 18.09.22 um 16:36 schrieb cgel.zte@gmail.com: > From: Xu Panda > > Comparing pointer whith NULL instead of comparing pointer to 0. > > Reported-by: Zeal Robot > Signed-off-by: Xu Panda Thanks but there is already a fix queued (https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git/commit/?h=next&id=3ed2607b18cce86efed3a3c76fce89dc11184f62) and your fix would still trigger checkpatch --strict warning. > --- > arch/s390/kvm/pci.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/s390/kvm/pci.h b/arch/s390/kvm/pci.h > index 3a3606c3a0fe..aadafa2e03d1 100644 > --- a/arch/s390/kvm/pci.h > +++ b/arch/s390/kvm/pci.h > @@ -46,8 +46,8 @@ extern struct zpci_aift *aift; > static inline struct kvm *kvm_s390_pci_si_to_kvm(struct zpci_aift *aift, > unsigned long si) > { > - if (!IS_ENABLED(CONFIG_VFIO_PCI_ZDEV_KVM) || aift->kzdev == 0 || > - aift->kzdev[si] == 0) > + if (!IS_ENABLED(CONFIG_VFIO_PCI_ZDEV_KVM) || aift->kzdev == NULL || > + aift->kzdev[si] == NULL) > return 0; > return aift->kzdev[si]->kvm; > };