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 <ygardi@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index aa43bfe..ff61461 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -1194,7 +1194,16 @@
*/
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;