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| author |   Wayne Boyer <wayneb@linux.vnet.ibm.com> | 2010-06-10 14:46:34 -0700 |
|---|---|---|
| committer |   James Bottomley <James.Bottomley@suse.de> | 2010-07-27 12:01:42 -0500 |
| commit | 56115598c571cadd4b465836e1423a452a908c89 (patch) | |
| tree | e2b37e4e62e6fb1b0d243b2e2d5d5a6b57e2a6fc /drivers/scsi/ipr.c | |
| parent | [SCSI] be2iscsi: fix null dereference on error path (diff) | |
| download | linux-dev-56115598c571cadd4b465836e1423a452a908c89.tar.xz linux-dev-56115598c571cadd4b465836e1423a452a908c89.zip | |
[SCSI] ipr: move setting of the allow_restart flag for vsets and disks
A problem was found where the call to scsi_add_device() fails intermittently
for an adapter. This is caused when __scsi_add_device() returns -ENODEV as
a result of not calling scsi_probe_and_add_lun() since the call to
scsi_host_scan_allowed() fails. scsi_host_scan_allowed() fails because the
adapter state is set to SHOST_RECOVERY instead of SHOST_RUNNING. The state of
the adapter is being set to SHOST_RECOVERY by scsi_eh_scmd_add() during
error handling.
This problem is avoided by moving the setting of the allow_restart flag to
later in the device initialization sequence. This prevents further error
handling if we get a NOT_READY response from a TUR command by causing
scsi_check_sense() to return SUCCESS. Therefore, scsi_eh_scmd_add() will
not run and the adapter state will remain as SHOST_RUNNING.
Signed-off-by: Wayne Boyer <wayneb@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | drivers/scsi/ipr.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 62bbe31dd47b..37158eab3c89 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -4353,8 +4353,6 @@ static int ipr_slave_configure(struct scsi_device *sdev) IPR_VSET_RW_TIMEOUT); blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS); } - if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)) - sdev->allow_restart = 1; if (ipr_is_gata(res) && res->sata_port) ap = res->sata_port->ap; spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); @@ -6771,7 +6769,8 @@ static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd) list_move_tail(&res->queue, &ioa_cfg->used_res_q); ipr_init_res_entry(res, &cfgtew); res->add_to_ml = 1; - } + } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))) + res->sdev->allow_restart = 1; if (found) ipr_update_res_entry(res, &cfgtew); |