diff --git a/drivers/staging/vt6655/srom.c b/drivers/staging/vt6655/srom.c
index 5cdbc24e8c45..63f62b0e2db8 100644
--- a/drivers/staging/vt6655/srom.c
+++ b/drivers/staging/vt6655/srom.c
@@ -80,7 +80,7 @@ unsigned char SROMbyReadEmbedded(void __iomem *iobase,
 			VNSvInPortB(iobase + MAC_REG_I2MCSR, &byWait);
 			if (byWait & (I2MCSR_DONE | I2MCSR_NACK))
 				break;
-			PCAvDelayByIO(CB_DELAY_LOOP_WAIT);
+			udelay(CB_DELAY_LOOP_WAIT);
 		}
 		if ((wDelay < W_MAX_TIMEOUT) &&
 		    (!(byWait & I2MCSR_NACK))) {
diff --git a/drivers/staging/vt6655/upc.h b/drivers/staging/vt6655/upc.h
index b374db5fca81..6bc2be0bf4f0 100644
--- a/drivers/staging/vt6655/upc.h
+++ b/drivers/staging/vt6655/upc.h
@@ -38,19 +38,6 @@
 #define VNSvOutPortD(dwIOAddress, dwData) \
 	iowrite32((u32)(dwData), dwIOAddress)
 
-#define PCAvDelayByIO(uDelayUnit)				\
-do {								\
-	unsigned char __maybe_unused byData;			\
-	unsigned long ii;					\
-								\
-	if (uDelayUnit <= 50) {					\
-		udelay(uDelayUnit);				\
-	} else {						\
-		for (ii = 0; ii < (uDelayUnit); ii++)		\
-			byData = inb(0x61);			\
-	}							\
-} while (0)
-
 /*---------------------  Export Classes  ----------------------------*/
 
 /*---------------------  Export Variables  --------------------------*/