diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
index 706eab4e1237..2da079238966 100644
--- a/drivers/staging/mt7621-mmc/sd.c
+++ b/drivers/staging/mt7621-mmc/sd.c
@@ -104,8 +104,6 @@
 
 #define DRV_NAME            "mtk-sd"
 
-#define HOST_MAX_NUM        (1) /* +/- by chhung */
-
 #if defined(CONFIG_SOC_MT7620)
 #define HOST_MAX_MCLK       (48000000) /* +/- by chhung */
 #elif defined(CONFIG_SOC_MT7621)