diff --git a/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h b/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
index aea68b60ef98af7bac8c5841536c8150d803888f..fa95e9a009729f41ddd1c39174e4f6908f515226 100644
--- a/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
+++ b/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
@@ -11,6 +11,8 @@
 #ifndef __S3C64XX_PLAT_SPI_H
 #define __S3C64XX_PLAT_SPI_H
 
+struct platform_device;
+
 /**
  * struct s3c64xx_spi_csinfo - ChipSelect description
  * @fb_delay: Slave specific feedback delay.