From ab436706e4a86719595012424ecefbdf4a84cc30 Mon Sep 17 00:00:00 2001 From: Yaniv Gardi Date: Mon, 5 Dec 2016 19:25:15 -0800 Subject: [PATCH] scsi: ufs-qcom: add probe_defer in case phy driver not probed yet In case UFS driver is probed before the phy driver does, the UFS driver should return a PROBE_DEFER code. Signed-off-by: Yaniv Gardi Signed-off-by: Subhash Jadavani Signed-off-by: Martin K. Petersen --- drivers/scsi/ufs/ufs-qcom.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c index aa43bfea0d00..ff614613bf89 100644 --- a/drivers/scsi/ufs/ufs-qcom.c +++ b/drivers/scsi/ufs/ufs-qcom.c @@ -1194,7 +1194,16 @@ static int ufs_qcom_init(struct ufs_hba *hba) */ host->generic_phy = devm_phy_get(dev, "ufsphy"); - if (IS_ERR(host->generic_phy)) { + if (host->generic_phy == ERR_PTR(-EPROBE_DEFER)) { + /* + * UFS driver might be probed before the phy driver does. + * In that case we would like to return EPROBE_DEFER code. + */ + err = -EPROBE_DEFER; + dev_warn(dev, "%s: required phy device. hasn't probed yet. err = %d\n", + __func__, err); + goto out_variant_clear; + } else if (IS_ERR(host->generic_phy)) { err = PTR_ERR(host->generic_phy); dev_err(dev, "%s: PHY get failed %d\n", __func__, err); goto out_variant_clear; -- 2.20.1