linux/drivers/scsi/libsas
Luo Jiaxing 3865337965 scsi: libsas: Check link status in ATA prereset()
libata currently attempts to reset even if the SATA disk is unplugged.  To
avoid the meaningless reset of a missing disk, libsas should report offline
status to libata. libata already provides a .prereset callback for this
purpose. This is called by ata_eh_reset() and can be used to influence
whether a reset attempt should be made.

Add sas_ata_preset callback to check status of phy and disk. If the disk is
already offline or phy is disabled, we return -ENOENT to libata to avoid
the reset.

Link: https://lore.kernel.org/r/1595408643-63011-3-git-send-email-luojiaxing@huawei.com
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-24 22:09:55 -04:00
..
Kconfig ata: make SATA_PMP option selectable only if any SATA host driver is enabled 2020-03-26 10:28:17 -06:00
Makefile treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
sas_ata.c scsi: libsas: Check link status in ATA prereset() 2020-07-24 22:09:55 -04:00
sas_discover.c scsi: libsas: Tidy SAS address print format 2019-12-21 13:42:42 -05:00
sas_event.c scsi: libsas: switch remaining files to SPDX tags 2019-05-21 06:16:22 -04:00
sas_expander.c scsi: libsas: Tidy SAS address print format 2019-12-21 13:42:42 -05:00
sas_host_smp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
sas_init.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
sas_internal.h scsi: libsas: Tidy SAS address print format 2019-12-21 13:42:42 -05:00
sas_phy.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
sas_port.c scsi: libsas: Tidy SAS address print format 2019-12-21 13:42:42 -05:00
sas_scsi_host.c scsi: libsas: Tidy SAS address print format 2019-12-21 13:42:42 -05:00
sas_task.c scsi: libsas: Tidy SAS address print format 2019-12-21 13:42:42 -05:00