scsi: ufs: core: Do not look for unsupported vdd-hba-max-microamp

Bindings do not allow vdd-hba-max-microamp property and the driver does not
use it (does not control load of vdd-hba supply).  Skip looking for this
property to avoid misleading dmesg messages:

  ufshcd-qcom 1d84000.ufs: ufshcd_populate_vreg: unable to find vdd-hba-max-microamp

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230906113302.201888-1-krzysztof.kozlowski@linaro.org
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: krzk

drivers/ufs/host/ufs-mediatek.c

@@ -806,7 +806,7 @@ static int ufs_mtk_vreg_fix_vcc(struct ufs_hba *hba)
 		return 0;
 	}
 
-	err = ufshcd_populate_vreg(dev, vcc_name, &info->vcc);
+	err = ufshcd_populate_vreg(dev, vcc_name, &info->vcc, false);
 	if (err)
 		return err;
 

drivers/ufs/host/ufshcd-pltfrm.c

@@ -121,7 +121,7 @@ static bool phandle_exists(const struct device_node *np,
 
 #define MAX_PROP_SIZE 32
 int ufshcd_populate_vreg(struct device *dev, const char *name,
-			 struct ufs_vreg **out_vreg)
+			 struct ufs_vreg **out_vreg, bool skip_current)
 {
 	char prop_name[MAX_PROP_SIZE];
 	struct ufs_vreg *vreg = NULL;
@@ -147,6 +147,11 @@ int ufshcd_populate_vreg(struct device *dev, const char *name,
 	if (!vreg->name)
 		return -ENOMEM;
 
+	if (skip_current) {
+		vreg->max_uA = 0;
+		goto out;
+	}
+
 	snprintf(prop_name, MAX_PROP_SIZE, "%s-max-microamp", name);
 	if (of_property_read_u32(np, prop_name, &vreg->max_uA)) {
 		dev_info(dev, "%s: unable to find %s\n", __func__, prop_name);
@@ -175,19 +180,19 @@ static int ufshcd_parse_regulator_info(struct ufs_hba *hba)
 	struct device *dev = hba->dev;
 	struct ufs_vreg_info *info = &hba->vreg_info;
 
-	err = ufshcd_populate_vreg(dev, "vdd-hba", &info->vdd_hba);
+	err = ufshcd_populate_vreg(dev, "vdd-hba", &info->vdd_hba, true);
 	if (err)
 		goto out;
 
-	err = ufshcd_populate_vreg(dev, "vcc", &info->vcc);
+	err = ufshcd_populate_vreg(dev, "vcc", &info->vcc, false);
 	if (err)
 		goto out;
 
-	err = ufshcd_populate_vreg(dev, "vccq", &info->vccq);
+	err = ufshcd_populate_vreg(dev, "vccq", &info->vccq, false);
 	if (err)
 		goto out;
 
-	err = ufshcd_populate_vreg(dev, "vccq2", &info->vccq2);
+	err = ufshcd_populate_vreg(dev, "vccq2", &info->vccq2, false);
 out:
 	return err;
 }

drivers/ufs/host/ufshcd-pltfrm.h

@@ -32,6 +32,6 @@ void ufshcd_init_pwr_dev_param(struct ufs_dev_params *dev_param);
 int ufshcd_pltfrm_init(struct platform_device *pdev,
 		       const struct ufs_hba_variant_ops *vops);
 int ufshcd_populate_vreg(struct device *dev, const char *name,
-			 struct ufs_vreg **out_vreg);
+			 struct ufs_vreg **out_vreg, bool skip_current);
 
 #endif /* UFSHCD_PLTFRM_H_ */