diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 76c3c15cb1e..736bee5dafe 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3619,8 +3619,14 @@ int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, scontrol |= (0x2 << 8); break; case ATA_LPM_MIN_POWER: - /* no restrictions on LPM transitions */ - scontrol &= ~(0x3 << 8); + if (ata_link_nr_enabled(link) > 0) + /* no restrictions on LPM transitions */ + scontrol &= ~(0x3 << 8); + else { + /* empty port, power off */ + scontrol &= ~0xf; + scontrol |= (0x1 << 2); + } break; default: WARN_ON(1); |