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| author |   Dan Williams <dan.j.williams@intel.com> | 2012-01-30 21:40:45 -0800 |
|---|---|---|
| committer |   James Bottomley <JBottomley@Parallels.com> | 2012-02-29 15:42:51 -0600 |
| commit | 26a2e68f816ebd736a0484ca293457b280af4ef1 (patch) | |
| tree | 5fbae208c3bcda21dd1f9f918e811e07c2ce80e8 /drivers/scsi/libsas/sas_scsi_host.c | |
| parent | [SCSI] libsas: fixup target_port_protocols for expanders that don't report sata (diff) | |
| download | linux-dev-26a2e68f816ebd736a0484ca293457b280af4ef1.tar.xz linux-dev-26a2e68f816ebd736a0484ca293457b280af4ef1.zip | |
[SCSI] libsas: don't recover end devices attached to disabled phys
If userspace has decided to disable a phy the kernel should honor that
and not inadvertantly re-enable the phy via error recovery. This is
more straightforward in the sata case where link recovery (via
libata-eh) is separate from sas_task cancelling in libsas-eh. Teach
libsas to accept -ENODEV as a successful response from I_T_nexus_reset
('successful' in terms of not escalating further).
This is a more comprehensive fix then "libsas: don't recover 'gone'
devices in sas_ata_hard_reset()", as it is no longer sata-specific.
aic94xx does check the return value from sas_phy_reset() so if the phy
is disabled we proceed with clearing the I_T_nexus.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/libsas/sas_scsi_host.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index fd3291337c1b..f0b9b7bf1882 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -607,7 +607,8 @@ static void sas_eh_handle_sas_errors(struct Scsi_Host *shost, struct list_head * SAS_DPRINTK("task 0x%p is not at LU: I_T recover\n", task); tmf_resp = sas_recover_I_T(task->dev); - if (tmf_resp == TMF_RESP_FUNC_COMPLETE) { + if (tmf_resp == TMF_RESP_FUNC_COMPLETE || + tmf_resp == -ENODEV) { struct domain_device *dev = task->dev; SAS_DPRINTK("I_T %016llx recovered\n", SAS_ADDR(task->dev->sas_addr)); |