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@xxxxxxxxxxxxxxxxxx> --- drivers/scsi/ipr.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) Index: b/drivers/scsi/ipr.c =================================================================== --- a/drivers/scsi/ipr.c 2010-06-03 15:48:52.000000000 -0700 +++ b/drivers/scsi/ipr.c 2010-06-08 17:22:14.000000000 -0700 @@ -4350,8 +4350,6 @@ static int ipr_slave_configure(struct sc 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); @@ -6768,7 +6766,8 @@ static int ipr_init_res_table(struct ipr 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); -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
