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libata: remove spindown skipping and warning

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This was a hack to give userland shutdown tools time to drop manual
spindown.  All popular distros updated quite some time ago and the due
is well passed.  Drop it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jaswinder Singh Rajput <jaswinder@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo 2009-07-03 11:46:12 +09:00 committed by Jeff Garzik
parent 6521148c64
commit 051d9fbdd1
3 changed files with 0 additions and 70 deletions
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18
Documentation/feature-removal-schedule.txt
View file

@ -206,24 +206,6 @@ Who: Len Brown <len.brown@intel.com>
---------------------------
What: libata spindown skipping and warning
When: Dec 2008
Why: Some halt(8) implementations synchronize caches for and spin
down libata disks because libata didn't use to spin down disk on
system halt (only synchronized caches).
Spin down on system halt is now implemented. sysfs node
/sys/class/scsi_disk/h:c:i:l/manage_start_stop is present if
spin down support is available.
Because issuing spin down command to an already spun down disk
makes some disks spin up just to spin down again, libata tracks
device spindown status to skip the extra spindown command and
warn about it.
This is to give userspace tools the time to get updated and will
be removed after userspace is reasonably updated.
Who: Tejun Heo <htejun@gmail.com>
---------------------------
What: i386/x86_64 bzImage symlinks
When: April 2010

51
drivers/ata/libata-scsi.c
View file

@ -1257,23 +1257,6 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
return queue_depth;
}
/* XXX: for spindown warning */
static void ata_delayed_done_timerfn(unsigned long arg)
{
struct scsi_cmnd *scmd = (void *)arg;
scmd->scsi_done(scmd);
}
/* XXX: for spindown warning */
static void ata_delayed_done(struct scsi_cmnd *scmd)
{
static struct timer_list timer;
setup_timer(&timer, ata_delayed_done_timerfn, (unsigned long)scmd);
mod_timer(&timer, jiffies + 5 * HZ);
}
/**
* ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
* @qc: Storage for translated ATA taskfile
@ -1338,32 +1321,6 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
system_entering_hibernation())
goto skip;
/* XXX: This is for backward compatibility, will be
* removed. Read Documentation/feature-removal-schedule.txt
* for more info.
*/
if ((qc->dev->flags & ATA_DFLAG_SPUNDOWN) &&
(system_state == SYSTEM_HALT ||
system_state == SYSTEM_POWER_OFF)) {
static unsigned long warned;
if (!test_and_set_bit(0, &warned)) {
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");
/* ->scsi_done is not used, use it for
* delayed completion.
*/
scmd->scsi_done = qc->scsidone;
qc->scsidone = ata_delayed_done;
}
goto skip;
}
/* Issue ATA STANDBY IMMEDIATE command */
tf->command = ATA_CMD_STANDBYNOW1;
}
@ -1764,14 +1721,6 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
}
}
/* XXX: track spindown state for spindown skipping and warning */
if (unlikely(qc->tf.command == ATA_CMD_STANDBY ||
qc->tf.command == ATA_CMD_STANDBYNOW1))
qc->dev->flags |= ATA_DFLAG_SPUNDOWN;
else if (likely(system_state != SYSTEM_HALT &&
system_state != SYSTEM_POWER_OFF))
qc->dev->flags &= ~ATA_DFLAG_SPUNDOWN;
if (need_sense && !ap->ops->error_handler)
ata_dump_status(ap->print_id, &qc->result_tf);

1
include/linux/libata.h
View file

@ -143,7 +143,6 @@ enum {
ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */
ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */