diff options
| author | Nigel Cunningham <ncunningham@cyclades.com> | 2006-03-23 23:22:16 +1000 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-03-24 09:51:36 -0500 |
| commit | 082776e4be791736c32baf818e50f501a7f83819 (patch) | |
| tree | 508fe750353ccd8f6a77cf2c882c15ab20a1e63e /drivers | |
| parent | 83206a2903fd2ddb1761d906b2b3b3de17ef87f1 (diff) | |
| download | kernel_samsung_tuna-082776e4be791736c32baf818e50f501a7f83819.zip kernel_samsung_tuna-082776e4be791736c32baf818e50f501a7f83819.tar.gz kernel_samsung_tuna-082776e4be791736c32baf818e50f501a7f83819.tar.bz2 | |
[PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE.
At the moment libata doesn't pass pm_message_t down ata_device_suspend.
This causes drives to be powered down when we just want a freeze,
causing unnecessary wear and tear. This patch gets pm_message_t passed
down so that it can be used to determine whether to power down the
drive.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
drivers/scsi/libata-core.c | 5 +++--
drivers/scsi/libata-scsi.c | 4 ++--
drivers/scsi/scsi_sysfs.c | 2 +-
include/linux/libata.h | 4 ++--
include/scsi/scsi_host.h | 2 +-
5 files changed, 9 insertions(+), 8 deletions(-)
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/libata-core.c | 5 | ||||
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 4 | ||||
| -rw-r--r-- | drivers/scsi/scsi_sysfs.c | 2 |
3 files changed, 6 insertions, 5 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 6970f68..d8f77f2 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -4336,14 +4336,15 @@ int ata_device_resume(struct ata_port *ap, struct ata_device *dev) * Flush the cache on the drive, if appropriate, then issue a * standbynow command. */ -int ata_device_suspend(struct ata_port *ap, struct ata_device *dev) +int ata_device_suspend(struct ata_port *ap, struct ata_device *dev, pm_message_t state) { if (!ata_dev_present(dev)) return 0; if (dev->class == ATA_DEV_ATA) ata_flush_cache(ap, dev); - ata_standby_drive(ap, dev); + if (state.event != PM_EVENT_FREEZE) + ata_standby_drive(ap, dev); ap->flags |= ATA_FLAG_SUSPENDED; return 0; } diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index a1259b2..1fd3826 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -414,12 +414,12 @@ int ata_scsi_device_resume(struct scsi_device *sdev) return ata_device_resume(ap, dev); } -int ata_scsi_device_suspend(struct scsi_device *sdev) +int ata_scsi_device_suspend(struct scsi_device *sdev, pm_message_t state) { struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0]; struct ata_device *dev = &ap->device[sdev->id]; - return ata_device_suspend(ap, dev); + return ata_device_suspend(ap, dev, state); } /** diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 8905549..a6fde52 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -286,7 +286,7 @@ static int scsi_bus_suspend(struct device * dev, pm_message_t state) return err; if (sht->suspend) - err = sht->suspend(sdev); + err = sht->suspend(sdev, state); return err; } |