diff options
Diffstat (limited to 'drivers/scsi/ufs/ufs-sysfs.c')
| -rw-r--r-- | drivers/scsi/ufs/ufs-sysfs.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c index bdcd27faa054..08e72b7eef6a 100644 --- a/drivers/scsi/ufs/ufs-sysfs.c +++ b/drivers/scsi/ufs/ufs-sysfs.c @@ -28,6 +28,7 @@ static const char *ufschd_ufs_dev_pwr_mode_to_string( case UFS_ACTIVE_PWR_MODE: return "ACTIVE"; case UFS_SLEEP_PWR_MODE: return "SLEEP"; case UFS_POWERDOWN_PWR_MODE: return "POWERDOWN"; + case UFS_DEEPSLEEP_PWR_MODE: return "DEEPSLEEP"; default: return "UNKNOWN"; } } @@ -38,6 +39,7 @@ static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev, bool rpm) { struct ufs_hba *hba = dev_get_drvdata(dev); + struct ufs_dev_info *dev_info = &hba->dev_info; unsigned long flags, value; if (kstrtoul(buf, 0, &value)) @@ -46,6 +48,11 @@ static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev, if (value >= UFS_PM_LVL_MAX) return -EINVAL; + if (ufs_pm_lvl_states[value].dev_state == UFS_DEEPSLEEP_PWR_MODE && + (!(hba->caps & UFSHCD_CAP_DEEPSLEEP) || + !(dev_info->wspecversion >= 0x310))) + return -EINVAL; + spin_lock_irqsave(hba->host->host_lock, flags); if (rpm) hba->rpm_lvl = value; |