e4a9c3732c
When managing shost->host_eh_scheduled libata assumes that there is a 1:1 shost-to-ata_port relationship. libsas creates a 1:N relationship so it needs to manage host_eh_scheduled cumulatively at the host level. The sched_eh and end_eh port port ops allow libsas to track when domain devices enter/leave the "eh-pending" state under ha->lock (previously named ha->state_lock, but it is no longer just a lock for ha->state changes). Since host_eh_scheduled indicates eh without backing commands pinning the device it can be deallocated at any time. Move the taking of the domain_device reference under the port_lock to guarantee that the ata_port stays around for the duration of eh. Reviewed-by: Jacek Danecki <jacek.danecki@intel.com> Acked-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com> |
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| sas_ata.c | ||
| sas_discover.c | ||
| sas_dump.c | ||
| sas_dump.h | ||
| sas_event.c | ||
| sas_expander.c | ||
| sas_host_smp.c | ||
| sas_init.c | ||
| sas_internal.h | ||
| sas_phy.c | ||
| sas_port.c | ||
| sas_scsi_host.c | ||
| sas_task.c | ||