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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_ata.c | |
| parent | 77c309f3cdf9e217032dfe330f5881d352bb0436 (diff) | |
| download | linux-stable-26a2e68f816ebd736a0484ca293457b280af4ef1.tar.gz linux-stable-26a2e68f816ebd736a0484ca293457b280af4ef1.tar.bz2 linux-stable-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 'drivers/scsi/libsas/sas_ata.c')
| -rw-r--r-- | drivers/scsi/libsas/sas_ata.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 08d2103a45b7..bc0cecc6ad62 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -407,10 +407,9 @@ static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class, struct domain_device *dev = ap->private_data; struct sas_internal *i = dev_to_sas_internal(dev); - if (test_bit(SAS_DEV_GONE, &dev->state)) - return -ENODEV; - res = i->dft->lldd_I_T_nexus_reset(dev); + if (res == -ENODEV) + return res; if (res != TMF_RESP_FUNC_COMPLETE) sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n"); |