diff options
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.c')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 4c0827f184b3..1581d03e9912 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -74,6 +74,9 @@ /* maximum number of link-startup retries */ #define DME_LINKSTARTUP_RETRIES 3 +/* Maximum retries for Hibern8 enter */ +#define UIC_HIBERN8_ENTER_RETRIES 3 + /* maximum number of reset retries before giving up */ #define MAX_HOST_RESET_RETRIES 5 @@ -2387,13 +2390,32 @@ out: return ret; } -static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba) +static int __ufshcd_uic_hibern8_enter(struct ufs_hba *hba) { + int ret; struct uic_command uic_cmd = {0}; uic_cmd.command = UIC_CMD_DME_HIBER_ENTER; + ret = ufshcd_uic_pwr_ctrl(hba, &uic_cmd); + + if (ret) + dev_err(hba->dev, "%s: hibern8 enter failed. ret = %d\n", + __func__, ret); + + return ret; +} + +static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba) +{ + int ret = 0, retries; - return ufshcd_uic_pwr_ctrl(hba, &uic_cmd); + for (retries = UIC_HIBERN8_ENTER_RETRIES; retries > 0; retries--) { + ret = __ufshcd_uic_hibern8_enter(hba); + if (!ret || ret == -ENOLINK) + goto out; + } +out: + return ret; } static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba) |