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Petersen" To: jejb@linux.ibm.com, Jie Zhan Cc: "Martin K . Petersen" , linux-kernel@vger.kernel.org, prime.zeng@hisilicon.com, john.g.garry@oracle.com, yangxingui@huawei.com, yanaijie@huawei.com, liyihang9@huawei.com, johannes.thumshirn@wdc.com, chenxiang66@hisilicon.com, damien.lemoal@opensource.wdc.com, linux-scsi@vger.kernel.org, linuxarm@huawei.com, duoming@zju.edu.cn Subject: Re: [PATCH for-next 0/5] scsi: hisi_sas/libsas: Fix SATA devices missing issue during hisi_sas_debug_I_T_nexus_reset() Date: Thu, 1 Dec 2022 03:45:32 +0000 Message-Id: <166986602294.2101055.10313720728378984027.b4-ty@oracle.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221118083714.4034612-1-zhanjie9@hisilicon.com> References: <20221118083714.4034612-1-zhanjie9@hisilicon.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-01_02,2022-11-30_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 suspectscore=0 phishscore=0 mlxscore=0 bulkscore=0 spamscore=0 malwarescore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2210170000 definitions=main-2212010022 X-Proofpoint-ORIG-GUID: u8G2w2B9H03QSuoaYSQ_-4dc5rQV034t X-Proofpoint-GUID: u8G2w2B9H03QSuoaYSQ_-4dc5rQV034t X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE 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 On Fri, 18 Nov 2022 16:37:09 +0800, Jie Zhan wrote: > SATA devices on an expander may be removed and not be found again > when I_T nexus reset and revalidation are processed simultaneously, > which is probable to happen in hisi_sas_clear_nexus_ha(). > > The issue came up since commit 71453bd9d1bf ("scsi: hisi_sas: Use > sas_ata_wait_after_reset() in IT nexus reset"), where the ex_phy's > change count is updated in hisi_sas_debug_I_T_nexus_reset(), stopping > future revalidation from discovering the SATA devices after link > reset. > > [...] Applied to 6.2/scsi-queue, thanks! [1/5] Revert "scsi: hisi_sas: Drain bcast events in hisi_sas_rescan_topology()" https://git.kernel.org/mkp/scsi/c/7e613be7c63d [2/5] Revert "scsi: hisi_sas: Don't send bcast events from HW during nexus HA reset" https://git.kernel.org/mkp/scsi/c/94a3555d1f0f [3/5] scsi: libsas: Add smp_ata_check_ready_type() https://git.kernel.org/mkp/scsi/c/9181ce3cb5d9 [4/5] scsi: hisi_sas: Fix SATA devices missing issue during I_T nexus reset https://git.kernel.org/mkp/scsi/c/3c2673a09cf1 [5/5] scsi: libsas: Do not export sas_ata_wait_after_reset() https://git.kernel.org/mkp/scsi/c/4d450cf2b00d -- Martin K. Petersen Oracle Linux Engineering