diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h
index d6f1b1d94352..938b8cc19fc6 100644
--- a/arch/s390/include/asm/pci_clp.h
+++ b/arch/s390/include/asm/pci_clp.h
@@ -85,7 +85,7 @@ struct clp_rsp_query_pci {
 	u32 fid;			/* pci function id */
 	u8 bar_size[PCI_BAR_COUNT];
 	u16 pchid;
-	u32 bar[PCI_BAR_COUNT];
+	__le32 bar[PCI_BAR_COUNT];
 	u8 pfip[CLP_PFIP_NR_SEGMENTS];	/* pci function internal path */
 	u32			: 16;
 	u8 fmb_len;
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 38e17d4d9884..4c0fa9b3b2a0 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -224,8 +224,8 @@ static int zpci_cfg_load(struct zpci_dev *zdev, int offset, u32 *val, u8 len)
 
 	rc = zpci_load(&data, req, offset);
 	if (!rc) {
-		data = data << ((8 - len) * 8);
-		data = le64_to_cpu(data);
+		data = le64_to_cpu((__force __le64) data);
+		data >>= (8 - len) * 8;
 		*val = (u32) data;
 	} else
 		*val = 0xffffffff;
@@ -238,8 +238,8 @@ static int zpci_cfg_store(struct zpci_dev *zdev, int offset, u32 val, u8 len)
 	u64 data = val;
 	int rc;
 
-	data = cpu_to_le64(data);
-	data = data >> ((8 - len) * 8);
+	data <<= (8 - len) * 8;
+	data = (__force u64) cpu_to_le64(data);
 	rc = zpci_store(data, req, offset);
 	return rc;
 }