diff --git a/drivers/rkflash/flash.c b/drivers/rkflash/flash.c
index 52be15969cda..276d18a08bd2 100644
--- a/drivers/rkflash/flash.c
+++ b/drivers/rkflash/flash.c
@@ -2,6 +2,8 @@
 
 /* Copyright (c) 2018 Rockchip Electronics Co. Ltd. */
 
+#define pr_fmt(fmt) "nandc: " fmt
+
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
@@ -450,8 +452,11 @@ u32 nandc_flash_init(void __iomem *nandc_addr)
 			    id_byte[0][1] != 0xA1 &&
 			    id_byte[0][1] != 0xAA &&
 			    id_byte[0][1] != 0xAC &&
-			    id_byte[0][1] != 0x6A)
+			    id_byte[0][1] != 0x6A) {
+				pr_err("The device not support yet!\n");
+
 				return FTL_UNSUPPORTED_FLASH;
+			}
 		}
 	}
 	if (id_byte[0][0] == 0x98 && (id_byte[0][4] & 0x80))
diff --git a/drivers/rkflash/sfc_nand.c b/drivers/rkflash/sfc_nand.c
index 7a94d97f99fe..08e12a9e7736 100644
--- a/drivers/rkflash/sfc_nand.c
+++ b/drivers/rkflash/sfc_nand.c
@@ -2,6 +2,8 @@
 
 /* Copyright (c) 2018 Rockchip Electronics Co. Ltd. */
 
+#define pr_fmt(fmt) "sfc_nand: " fmt
+
 #include <linux/bug.h>
 #include <linux/delay.h>
 #include <linux/kernel.h>
@@ -1037,8 +1039,11 @@ u32 sfc_nand_init(void)
 
 	p_nand_info = sfc_nand_get_info(id_byte);
 
-	if (!p_nand_info)
+	if (!p_nand_info) {
+		pr_err("The device not support yet!\n");
+
 		return (u32)FTL_UNSUPPORTED_FLASH;
+	}
 
 	sfc_nand_dev.manufacturer = id_byte[0];
 	sfc_nand_dev.mem_type = id_byte[1];
diff --git a/drivers/rkflash/sfc_nor.c b/drivers/rkflash/sfc_nor.c
index f7abe75a5b09..11cb4f31cbac 100644
--- a/drivers/rkflash/sfc_nor.c
+++ b/drivers/rkflash/sfc_nor.c
@@ -2,6 +2,8 @@
 
 /* Copyright (c) 2018 Rockchip Electronics Co. Ltd. */
 
+#define pr_fmt(fmt) "sfc_nor: " fmt
+
 #include <linux/bug.h>
 #include <linux/delay.h>
 #include <linux/kernel.h>
@@ -718,6 +720,8 @@ int snor_init(struct SFNOR_DEV *p_dev)
 	if (g_spi_flash_info) {
 		snor_parse_flash_table(p_dev, g_spi_flash_info);
 	} else {
+		pr_err("The device not support yet!\n");
+
 		p_dev->manufacturer = id_byte[0];
 		p_dev->mem_type = id_byte[1];
 		p_dev->capacity = 1 << (id_byte[2] - 9);