diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 29835f0..2cc604b 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -479,7 +479,7 @@ static int ahci_init_one(pci_dev_t dev)
 		pci_write_config_byte(dev, 0x41, 0xa1);
 #endif
 #else
-	struct scsi_platdata *plat = dev_get_platdata(dev);
+	struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
 	probe_ent->mmio_base = (void *)plat->base;
 #endif
 
diff --git a/drivers/ata/dwc_ahci.c b/drivers/ata/dwc_ahci.c
index 3f839bf..e634df5 100644
--- a/drivers/ata/dwc_ahci.c
+++ b/drivers/ata/dwc_ahci.c
@@ -28,7 +28,7 @@ struct dwc_ahci_priv {
 static int dwc_ahci_ofdata_to_platdata(struct udevice *dev)
 {
 	struct dwc_ahci_priv *priv = dev_get_priv(dev);
-	struct scsi_platdata *plat = dev_get_platdata(dev);
+	struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
 	fdt_addr_t addr;
 
 	plat->max_id = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
@@ -96,6 +96,5 @@ U_BOOT_DRIVER(dwc_ahci) = {
 	.ofdata_to_platdata = dwc_ahci_ofdata_to_platdata,
 	.probe	= dwc_ahci_probe,
 	.priv_auto_alloc_size = sizeof(struct dwc_ahci_priv),
-	.platdata_auto_alloc_size = sizeof(struct scsi_platdata),
 	.flags = DM_FLAG_ALLOC_PRIV_DMA,
 };
diff --git a/drivers/ata/sata_ceva.c b/drivers/ata/sata_ceva.c
index 0c24fce..f55ba59 100644
--- a/drivers/ata/sata_ceva.c
+++ b/drivers/ata/sata_ceva.c
@@ -113,7 +113,7 @@ static int ceva_init_sata(ulong mmio)
 
 static int sata_ceva_probe(struct udevice *dev)
 {
-	struct scsi_platdata *plat = dev_get_platdata(dev);
+	struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
 
 	ceva_init_sata(plat->base);
 	return 0;
@@ -126,7 +126,7 @@ static const struct udevice_id sata_ceva_ids[] = {
 
 static int sata_ceva_ofdata_to_platdata(struct udevice *dev)
 {
-	struct scsi_platdata *plat = dev_get_platdata(dev);
+	struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
 
 	plat->base = devfdt_get_addr(dev);
 	if (plat->base == FDT_ADDR_T_NONE)
@@ -145,5 +145,4 @@ U_BOOT_DRIVER(ceva_host_blk) = {
 	.of_match = sata_ceva_ids,
 	.probe = sata_ceva_probe,
 	.ofdata_to_platdata = sata_ceva_ofdata_to_platdata,
-	.platdata_auto_alloc_size = sizeof(struct scsi_platdata),
 };
diff --git a/drivers/scsi/scsi-uclass.c b/drivers/scsi/scsi-uclass.c
index 05da6cd..e4ee44b 100644
--- a/drivers/scsi/scsi-uclass.c
+++ b/drivers/scsi/scsi-uclass.c
@@ -24,4 +24,5 @@ UCLASS_DRIVER(scsi) = {
 	.id		= UCLASS_SCSI,
 	.name		= "scsi",
 	.post_probe	 = scsi_post_probe,
+	.per_device_platdata_auto_alloc_size = sizeof(struct scsi_platdata),
 };
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 5f5652b..2d0f81a 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -619,7 +619,7 @@ int scsi_scan(int mode)
 			return ret;
 
 		/* Get controller platdata */
-		plat = dev_get_platdata(dev);
+		plat = dev_get_uclass_platdata(dev);
 
 		for (i = 0; i < plat->max_id; i++)
 			for (lun = 0; lun < plat->max_lun; lun++)