diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h
index 86966f61e9c64f3d3e7d0f745f47ab74f5d1780e..1f9f1700ad42d7c6bfa90fbc044d5e524d3c1203 100644
--- a/drivers/mtd/spi/spi_flash_internal.h
+++ b/drivers/mtd/spi/spi_flash_internal.h
@@ -94,11 +94,6 @@ static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
 /* Program the status register. */
 int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr);
 
-#ifdef CONFIG_SPI_FLASH_BAR
-/* Program the bank address register */
-int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel);
-#endif
-
 /*
  * Same as spi_flash_cmd_read() except it also claims/releases the SPI
  * bus. Used as common part of the ->read() operation.
diff --git a/drivers/mtd/spi/spi_flash_ops.c b/drivers/mtd/spi/spi_flash_ops.c
index c408e27b61081c9bfdcb78268bf788d1a15f8cb6..b4e1c40fc91b1437e2dc9116282a61f89285859b 100644
--- a/drivers/mtd/spi/spi_flash_ops.c
+++ b/drivers/mtd/spi/spi_flash_ops.c
@@ -39,7 +39,7 @@ int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr)
 }
 
 #ifdef CONFIG_SPI_FLASH_BAR
-int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel)
+static int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel)
 {
 	u8 cmd;
 	int ret;