diff options
Diffstat (limited to 'drivers/ata/libata-scsi.c')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 157 |
1 files changed, 29 insertions, 128 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 9afba2ba489..dd81fa78cdc 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -510,133 +510,6 @@ static void ata_dump_status(unsigned id, struct ata_taskfile *tf) } } -#ifdef CONFIG_PM -/** - * ata_scsi_device_suspend - suspend ATA device associated with sdev - * @sdev: the SCSI device to suspend - * @mesg: target power management message - * - * Request suspend EH action on the ATA device associated with - * @sdev and wait for the operation to complete. - * - * LOCKING: - * Kernel thread context (may sleep). - * - * RETURNS: - * 0 on success, -errno otherwise. - */ -int ata_scsi_device_suspend(struct scsi_device *sdev, pm_message_t mesg) -{ - struct ata_port *ap = ata_shost_to_port(sdev->host); - struct ata_device *dev = ata_scsi_find_dev(ap, sdev); - unsigned long flags; - unsigned int action; - int rc = 0; - - if (!dev) - goto out; - - spin_lock_irqsave(ap->lock, flags); - - /* wait for the previous resume to complete */ - while (dev->flags & ATA_DFLAG_SUSPENDED) { - spin_unlock_irqrestore(ap->lock, flags); - ata_port_wait_eh(ap); - spin_lock_irqsave(ap->lock, flags); - } - - /* if @sdev is already detached, nothing to do */ - if (sdev->sdev_state == SDEV_OFFLINE || - sdev->sdev_state == SDEV_CANCEL || sdev->sdev_state == SDEV_DEL) - goto out_unlock; - - /* request suspend */ - action = ATA_EH_SUSPEND; - if (mesg.event != PM_EVENT_SUSPEND) - action |= ATA_EH_PM_FREEZE; - ap->eh_info.dev_action[dev->devno] |= action; - ap->eh_info.flags |= ATA_EHI_QUIET; - ata_port_schedule_eh(ap); - - spin_unlock_irqrestore(ap->lock, flags); - - /* wait for EH to do the job */ - ata_port_wait_eh(ap); - - spin_lock_irqsave(ap->lock, flags); - - /* If @sdev is still attached but the associated ATA device - * isn't suspended, the operation failed. - */ - if (sdev->sdev_state != SDEV_OFFLINE && - sdev->sdev_state != SDEV_CANCEL && sdev->sdev_state != SDEV_DEL && - !(dev->flags & ATA_DFLAG_SUSPENDED)) - rc = -EIO; - - out_unlock: - spin_unlock_irqrestore(ap->lock, flags); - out: - if (rc == 0) - sdev->sdev_gendev.power.power_state = mesg; - return rc; -} - -/** - * ata_scsi_device_resume - resume ATA device associated with sdev - * @sdev: the SCSI device to resume - * - * Request resume EH action on the ATA device associated with - * @sdev and return immediately. This enables parallel - * wakeup/spinup of devices. - * - * LOCKING: - * Kernel thread context (may sleep). - * - * RETURNS: - * 0. - */ -int ata_scsi_device_resume(struct scsi_device *sdev) -{ - struct ata_port *ap = ata_shost_to_port(sdev->host); - struct ata_device *dev = ata_scsi_find_dev(ap, sdev); - struct ata_eh_info *ehi = &ap->eh_info; - unsigned long flags; - unsigned int action; - - if (!dev) - goto out; - - spin_lock_irqsave(ap->lock, flags); - - /* if @sdev is already detached, nothing to do */ - if (sdev->sdev_state == SDEV_OFFLINE || - sdev->sdev_state == SDEV_CANCEL || sdev->sdev_state == SDEV_DEL) - goto out_unlock; - - /* request resume */ - action = ATA_EH_RESUME; - if (sdev->sdev_gendev.power.power_state.event == PM_EVENT_SUSPEND) - __ata_ehi_hotplugged(ehi); - else - action |= ATA_EH_PM_FREEZE | ATA_EH_SOFTRESET; - ehi->dev_action[dev->devno] |= action; - - /* We don't want autopsy and verbose EH messages. Disable - * those if we're the only device on this link. - */ - if (ata_port_max_devices(ap) == 1) - ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET; - - ata_port_schedule_eh(ap); - - out_unlock: - spin_unlock_irqrestore(ap->lock, flags); - out: - sdev->sdev_gendev.power.power_state = PMSG_ON; - return 0; -} -#endif /* CONFIG_PM */ - /** * ata_to_sense_error - convert ATA error to SCSI error * @id: ATA device number @@ -929,6 +802,8 @@ int ata_scsi_slave_config(struct scsi_device *sdev) blk_queue_max_phys_segments(sdev->request_queue, LIBATA_MAX_PRD); + sdev->manage_start_stop = 1; + if (dev) ata_scsi_dev_config(sdev, dev); @@ -1069,9 +944,35 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) } tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ - } else + } else { + /* XXX: This is for backward compatibility, will be + * removed. Read Documentation/feature-removal-schedule.txt + * for more info. + */ + if (ata_spindown_compat && + (system_state == SYSTEM_HALT || + system_state == SYSTEM_POWER_OFF)) { + static int warned = 0; + + if (!warned) { + spin_unlock_irq(qc->ap->lock); + ata_dev_printk(qc->dev, KERN_WARNING, + "DISK MIGHT NOT BE SPUN DOWN PROPERLY. " + "UPDATE SHUTDOWN UTILITY\n"); + ata_dev_printk(qc->dev, KERN_WARNING, + "For more info, visit " + "http://linux-ata.org/shutdown.html\n"); + warned = 1; + ssleep(5); + spin_lock_irq(qc->ap->lock); + } + scmd->result = SAM_STAT_GOOD; + return 1; + } + /* Issue ATA STANDBY IMMEDIATE command */ tf->command = ATA_CMD_STANDBYNOW1; + } /* * Standby and Idle condition timers could be implemented but that |