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| author | James Smart <James.Smart@Emulex.Com> | 2009-01-05 12:14:18 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-01-06 09:43:33 -0600 |
| commit | 4be98c0ca304c8a47998b29a7993664f71791250 (patch) | |
| tree | f24eb119e2b3332c5d27473055e7d83493b6a225 | |
| parent | 58607b30fc0f2230a189500112c7a7cca02804cf (diff) | |
| download | linux-4be98c0ca304c8a47998b29a7993664f71791250.tar.gz linux-4be98c0ca304c8a47998b29a7993664f71791250.tar.bz2 linux-4be98c0ca304c8a47998b29a7993664f71791250.zip | |
[SCSI] fc transport: restore missing dev_loss_tmo callback to LLDD
When we reworked the transport for the rport lifetimes, in cases where the
rport was reused as a container for tgt id bindings, we inadvertantly
removed the callback to the driver indicating that dev_loss_tmo had fired.
This patch restores that functionality.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| -rw-r--r-- | drivers/scsi/scsi_transport_fc.c | 21 | ||||
| -rw-r--r-- | include/scsi/scsi_transport_fc.h | 1 |
2 files changed, 20 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index dcef78776503..5f77417ed585 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -2407,8 +2407,12 @@ fc_rport_final_delete(struct work_struct *work) /* * Notify the driver that the rport is now dead. The LLDD will * also guarantee that any communication to the rport is terminated + * + * Avoid this call if we already called it when we preserved the + * rport for the binding. */ - if (i->f->dev_loss_tmo_callbk) + if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) && + (i->f->dev_loss_tmo_callbk)) i->f->dev_loss_tmo_callbk(rport); transport_remove_device(dev); @@ -2647,7 +2651,8 @@ fc_remote_port_add(struct Scsi_Host *shost, int channel, spin_lock_irqsave(shost->host_lock, flags); rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | - FC_RPORT_DEVLOSS_PENDING); + FC_RPORT_DEVLOSS_PENDING | + FC_RPORT_DEVLOSS_CALLBK_DONE); /* if target, initiate a scan */ if (rport->scsi_target_id != -1) { @@ -2944,6 +2949,7 @@ fc_timeout_deleted_rport(struct work_struct *work) struct fc_rport *rport = container_of(work, struct fc_rport, dev_loss_work.work); struct Scsi_Host *shost = rport_to_shost(rport); + struct fc_internal *i = to_fc_internal(shost->transportt); struct fc_host_attrs *fc_host = shost_to_fc_host(shost); unsigned long flags; @@ -3011,6 +3017,7 @@ fc_timeout_deleted_rport(struct work_struct *work) rport->roles = FC_PORT_ROLE_UNKNOWN; rport->port_state = FC_PORTSTATE_NOTPRESENT; rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; + rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; /* * Pre-emptively kill I/O rather than waiting for the work queue @@ -3046,8 +3053,18 @@ fc_timeout_deleted_rport(struct work_struct *work) * all attached scsi devices. */ fc_queue_work(shost, &rport->stgt_delete_work); + + /* + * Notify the driver that the rport is now dead. The LLDD will + * also guarantee that any communication to the rport is terminated + * + * Note: we set the CALLBK_DONE flag above to correspond + */ + if (i->f->dev_loss_tmo_callbk) + i->f->dev_loss_tmo_callbk(rport); } + /** * fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. * @work: rport to terminate io on. diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h index 6e04e6fe79c7..c9184f756cad 100644 --- a/include/scsi/scsi_transport_fc.h +++ b/include/scsi/scsi_transport_fc.h @@ -358,6 +358,7 @@ struct fc_rport { /* aka fc_starget_attrs */ #define FC_RPORT_DEVLOSS_PENDING 0x01 #define FC_RPORT_SCAN_PENDING 0x02 #define FC_RPORT_FAST_FAIL_TIMEDOUT 0x04 +#define FC_RPORT_DEVLOSS_CALLBK_DONE 0x08 #define dev_to_rport(d) \ container_of(d, struct fc_rport, dev) |