On 09/08/2016 10:50 AM, Gabriel Krisman Bertazi wrote:
>> @@ -3324,25 +3394,90 @@ restart:
>> }
>>
>> list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
>> - if (res->del_from_ml && res->sdev) {
>> + if (!res->del_from_ml)
>> + continue;
>> + if (res->sdev) {
>> did_work = 1;
>> sdev = res->sdev;
>> if (!scsi_device_get(sdev)) {
>> - if (!res->add_to_ml)
>> - list_move_tail(&res->queue,
>> &ioa_cfg->free_res_q);
>> - else
>> - res->del_from_ml = 0;
>> + if (!res->sata_port) {
>> + if (!res->add_to_ml)
>> +
>> list_move_tail(&res->queue, &ioa_cfg->free_res_q);
>> + else
>> + res->del_from_ml = 0;
>> + }
>>
>> spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
>> scsi_remove_device(sdev);
>> scsi_device_put(sdev);
>>
>> spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
>> }
>> break;
>> + } else if (ipr_is_gata(res)) {
>> + did_work = 1;
>> + sata_port = res->sata_port;
>> + res->sata_port = NULL;
>> + ap = sata_port->ap;
>> + if (!res->add_to_ml)
>> + list_move_tail(&res->queue,
>> &ioa_cfg->free_res_q);
>> + else
>> + res->del_from_ml = 0;
>> +
>> +
>> spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
>> + spin_lock_irqsave(ap->lock, lock_flags);
>> + ap->pflags |= ATA_PFLAG_UNLOADING;
>> + ata_port_schedule_eh(ap);
>> + spin_unlock_irqrestore(ap->lock, lock_flags);
>> +
>> + ata_port_wait_eh(ap);
>> + ata_sas_port_destroy(ap);
>> + kfree(sata_port);
>> + spin_lock_irqsave(ioa_cfg->host->host_lock,
>> lock_flags);
>> }
>> }
>> } while (did_work);
>>
>> list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
>> + if (res->add_to_ml && ipr_is_gata(res) && !res->sata_port) {
>> + spin_unlock_irqrestore(ioa_cfg->host->host_lock,
>> lock_flags);
>> + sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
>> + ap = ata_sas_port_alloc(&ioa_cfg->ata_host,
>> &sata_port_info, ioa_cfg->host);
>> +
>> + if (!sata_port || !ap) {
>> + spin_lock_irqsave(ioa_cfg->host->host_lock,
>> lock_flags);
>> + res->add_to_ml = 0;
>> + kfree(sata_port);
>> + goto restart;
>> + }
>
>
>> +
>> + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
>> + sata_port->ioa_cfg = ioa_cfg;
>> + sata_port->ap = ap;
>> + sata_port->res = res;
>> + INIT_WORK(&sata_port->work, ipr_sata_eh_work);
>> +
>> + res->sata_port = sata_port;
>> + ap->private_data = sata_port;
>> + ap->cbl = ATA_CBL_SATA;
>> + ap->scsi_host = ioa_cfg->host;
>> + spin_unlock_irqrestore(ioa_cfg->host->host_lock,
>> lock_flags);
>
> Do we really need to hold the host_lock in this small hunk?
Nope. Removed.
Thanks,
Brian
--
Brian King
Power Linux I/O
IBM Linux Technology Center
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