diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c
index ed22b6c0a73e..02cd2f6b8d3b 100644
--- a/drivers/staging/greybus/es2.c
+++ b/drivers/staging/greybus/es2.c
@@ -890,7 +890,7 @@ static int ap_probe(struct usb_interface *interface,
 				endpoint->bEndpointAddress;
 		} else {
 			dev_err(&udev->dev,
-				"Unknown endpoint type found, address %02x\n",
+				"Unknown endpoint type found, address 0x%02x\n",
 				endpoint->bEndpointAddress);
 		}
 	}
diff --git a/drivers/staging/greybus/sdio.c b/drivers/staging/greybus/sdio.c
index beb35747a4f8..da9093738d4a 100644
--- a/drivers/staging/greybus/sdio.c
+++ b/drivers/staging/greybus/sdio.c
@@ -398,7 +398,7 @@ static int gb_sdio_command(struct gb_sdio_host *host, struct mmc_command *cmd)
 		cmd_flags = GB_SDIO_RSP_R3_R4;
 		break;
 	default:
-		dev_err(mmc_dev(host->mmc), "cmd flag invalid %04x\n",
+		dev_err(mmc_dev(host->mmc), "cmd flag invalid 0x%04x\n",
 			mmc_resp_type(cmd));
 		ret = -EINVAL;
 		goto out;
@@ -418,7 +418,7 @@ static int gb_sdio_command(struct gb_sdio_host *host, struct mmc_command *cmd)
 		cmd_type = GB_SDIO_CMD_ADTC;
 		break;
 	default:
-		dev_err(mmc_dev(host->mmc), "cmd type invalid %04x\n",
+		dev_err(mmc_dev(host->mmc), "cmd type invalid 0x%04x\n",
 			mmc_cmd_type(cmd));
 		ret = -EINVAL;
 		goto out;
diff --git a/drivers/staging/greybus/svc.c b/drivers/staging/greybus/svc.c
index 4514e869a288..5ae64d7d3ecf 100644
--- a/drivers/staging/greybus/svc.c
+++ b/drivers/staging/greybus/svc.c
@@ -85,14 +85,14 @@ int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
 				&request, sizeof(request),
 				&response, sizeof(response));
 	if (ret) {
-		dev_err(&svc->dev, "failed to get DME attribute (%u %04x %u): %d\n",
+		dev_err(&svc->dev, "failed to get DME attribute (%u 0x%04x %u): %d\n",
 				intf_id, attr, selector, ret);
 		return ret;
 	}
 
 	result = le16_to_cpu(response.result_code);
 	if (result) {
-		dev_err(&svc->dev, "UniPro error while getting DME attribute (%u %04x %u): %u\n",
+		dev_err(&svc->dev, "UniPro error while getting DME attribute (%u 0x%04x %u): %u\n",
 				intf_id, attr, selector, result);
 		return -EIO;
 	}
@@ -121,14 +121,14 @@ int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
 				&request, sizeof(request),
 				&response, sizeof(response));
 	if (ret) {
-		dev_err(&svc->dev, "failed to set DME attribute (%u %04x %u %u): %d\n",
+		dev_err(&svc->dev, "failed to set DME attribute (%u 0x%04x %u %u): %d\n",
 				intf_id, attr, selector, value, ret);
 		return ret;
 	}
 
 	result = le16_to_cpu(response.result_code);
 	if (result) {
-		dev_err(&svc->dev, "UniPro error while setting DME attribute (%u %04x %u %u): %u\n",
+		dev_err(&svc->dev, "UniPro error while setting DME attribute (%u 0x%04x %u %u): %u\n",
 				intf_id, attr, selector, value, result);
 		return -EIO;
 	}
@@ -502,7 +502,7 @@ static void gb_svc_process_deferred_request(struct work_struct *work)
 		gb_svc_process_intf_hot_unplug(operation);
 		break;
 	default:
-		dev_err(&svc->dev, "bad deferred request type: %02x\n", type);
+		dev_err(&svc->dev, "bad deferred request type: 0x%02x\n", type);
 	}
 
 	gb_operation_put(operation);
diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
index ec978a451b17..1ba8476ce982 100644
--- a/drivers/staging/greybus/uart.c
+++ b/drivers/staging/greybus/uart.c
@@ -122,7 +122,7 @@ static int gb_uart_request_recv(u8 type, struct gb_operation *op)
 		break;
 	default:
 		dev_err(&connection->bundle->dev,
-			"unsupported unsolicited request: %02x\n", type);
+			"unsupported unsolicited request: 0x%02x\n", type);
 		ret = -EINVAL;
 	}