Jie Zhan 3c2673a09c scsi: hisi_sas: Fix SATA devices missing issue during I_T nexus reset ... SATA devices on an expander may be removed and not be found again when I_T nexus reset and revalidation are processed simultaneously. The issue comes from: - Revalidation can remove SATA devices in link reset, e.g. in hisi_sas_clear_nexus_ha(). - However, hisi_sas_debug_I_T_nexus_reset() polls the state of a SATA device on an expander after sending link_reset, where it calls: hisi_sas_debug_I_T_nexus_reset sas_ata_wait_after_reset ata_wait_after_reset ata_wait_ready smp_ata_check_ready sas_ex_phy_discover sas_ex_phy_discover_helper sas_set_ex_phy The ex_phy's change count is updated in sas_set_ex_phy(), so SATA devices after a link reset may not be found later through revalidation. A similar issue was reported in: commit 0f3fce5cc7 ("[SCSI] libsas: fix ata_eh clobbering ex_phys via smp_ata_check_ready") commit 87c8331fcf ("[SCSI] libsas: prevent domain rediscovery competing with ata error handling"). To address this issue, in hisi_sas_debug_I_T_nexus_reset(), we now call smp_ata_check_ready_type() that only polls the device type while not updating the ex_phy's data of libsas. Fixes: 71453bd9d1 ("scsi: hisi_sas: Use sas_ata_wait_after_reset() in IT nexus reset") Signed-off-by: Jie Zhan <zhanjie9@hisilicon.com> Link: https://lore.kernel.org/r/20221118083714.4034612-5-zhanjie9@hisilicon.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>		2022-11-26 02:26:02 +00:00
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hisi_sas_main.c	scsi: hisi_sas: Fix SATA devices missing issue during I_T nexus reset	2022-11-26 02:26:02 +00:00
hisi_sas_v1_hw.c	scsi: hisi_sas: Add helper to process bcast events	2022-09-06 22:28:11 -04:00
hisi_sas_v2_hw.c	SCSI misc on 20221007	2022-10-07 12:33:18 -07:00
hisi_sas_v3_hw.c	scsi: hisi_sas: Modify v3 HW SATA disk error state completion processing	2022-10-18 02:37:45 +00:00
hisi_sas.h	scsi: hisi_sas: Add SATA_DISK_ERR bit handling for v3 hw	2022-10-18 02:37:45 +00:00
Kconfig	scsi: hisi_sas: Enable debugfs support by default	2021-01-26 23:02:11 -05:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00