diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r-- | drivers/ata/libata-core.c | 55 |
1 files changed, 33 insertions, 22 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 0f63f805c78c..5afd30d76f0b 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1972,6 +1972,35 @@ retry: return rc; } +bool ata_dev_power_init_tf(struct ata_device *dev, struct ata_taskfile *tf, + bool set_active) +{ + /* Only applies to ATA and ZAC devices */ + if (dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC) + return false; + + ata_tf_init(dev, tf); + tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; + tf->protocol = ATA_PROT_NODATA; + + if (set_active) { + /* VERIFY for 1 sector at lba=0 */ + tf->command = ATA_CMD_VERIFY; + tf->nsect = 1; + if (dev->flags & ATA_DFLAG_LBA) { + tf->flags |= ATA_TFLAG_LBA; + tf->device |= ATA_LBA; + } else { + /* CHS */ + tf->lbal = 0x1; /* sect */ + } + } else { + tf->command = ATA_CMD_STANDBYNOW1; + } + + return true; +} + /** * ata_dev_power_set_standby - Set a device power mode to standby * @dev: target device @@ -1988,10 +2017,6 @@ void ata_dev_power_set_standby(struct ata_device *dev) struct ata_taskfile tf; unsigned int err_mask; - /* Issue STANDBY IMMEDIATE command only if supported by the device */ - if (dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC) - return; - /* * Some odd clown BIOSes issue spindown on power off (ACPI S4 or S5) * causing some drives to spin up and down again. For these, do nothing @@ -2005,10 +2030,9 @@ void ata_dev_power_set_standby(struct ata_device *dev) system_entering_hibernation()) return; - ata_tf_init(dev, &tf); - tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; - tf.protocol = ATA_PROT_NODATA; - tf.command = ATA_CMD_STANDBYNOW1; + /* Issue STANDBY IMMEDIATE command only if supported by the device */ + if (!ata_dev_power_init_tf(dev, &tf, false)) + return; ata_dev_notice(dev, "Entering standby power mode\n"); @@ -2038,22 +2062,9 @@ void ata_dev_power_set_active(struct ata_device *dev) * Issue READ VERIFY SECTORS command for 1 sector at lba=0 only * if supported by the device. */ - if (dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC) + if (!ata_dev_power_init_tf(dev, &tf, true)) return; - ata_tf_init(dev, &tf); - tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; - tf.protocol = ATA_PROT_NODATA; - tf.command = ATA_CMD_VERIFY; - tf.nsect = 1; - if (dev->flags & ATA_DFLAG_LBA) { - tf.flags |= ATA_TFLAG_LBA; - tf.device |= ATA_LBA; - } else { - /* CHS */ - tf.lbal = 0x1; /* sect */ - } - ata_dev_notice(dev, "Entering active power mode\n"); err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); |