diff --git a/arch/m32r/kernel/io_m32700ut.c b/arch/m32r/kernel/io_m32700ut.c
index e545b065f7e98e1f80f2a8f876b751aedd999ccb..eda9f963c1ebc38f5179be4a98cc8a9c922e3db5 100644
--- a/arch/m32r/kernel/io_m32700ut.c
+++ b/arch/m32r/kernel/io_m32700ut.c
@@ -64,11 +64,11 @@ static inline void *__port2addr_ata(unsigned long port)
  * from 0x10000000 to 0x13ffffff on physical address.
  * The base address of LAN controller(LAN91C111) is 0x300.
  */
-#define LAN_IOSTART	0x300
-#define LAN_IOEND	0x320
+#define LAN_IOSTART	0xa0000300
+#define LAN_IOEND	0xa0000320
 static inline void *_port2addr_ne(unsigned long port)
 {
-	return (void *)(port + NONCACHE_OFFSET + 0x10000000);
+	return (void *)(port + 0x10000000);
 }
 static inline void *_port2addr_usb(unsigned long port)
 {
diff --git a/arch/m32r/kernel/io_mappi2.c b/arch/m32r/kernel/io_mappi2.c
index d04e90acccb953a50b57c304ca0a440e2ec0d8c6..df3c729cb3e0afc7d53cc84cc51b1545dc261495 100644
--- a/arch/m32r/kernel/io_mappi2.c
+++ b/arch/m32r/kernel/io_mappi2.c
@@ -36,9 +36,6 @@ static inline void *_port2addr(unsigned long port)
 	return (void *)(port | (NONCACHE_OFFSET));
 }
 
-#define LAN_IOSTART	0x300
-#define LAN_IOEND	0x320
-
 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 static inline void *__port2addr_ata(unsigned long port)
 {
@@ -59,15 +56,17 @@ static inline void *__port2addr_ata(unsigned long port)
 }
 #endif
 
+#define LAN_IOSTART	0xa0000300
+#define LAN_IOEND	0xa0000320
 #ifdef CONFIG_CHIP_OPSP
 static inline void *_port2addr_ne(unsigned long port)
 {
-	return (void *)(port + NONCACHE_OFFSET + 0x10000000);
+	return (void *)(port + 0x10000000);
 }
 #else
 static inline void *_port2addr_ne(unsigned long port)
 {
-	return (void *)(port + NONCACHE_OFFSET + 0x04000000);
+	return (void *)(port + 0x04000000);
 }
 #endif
 static inline void *_port2addr_usb(unsigned long port)
diff --git a/arch/m32r/kernel/io_mappi3.c b/arch/m32r/kernel/io_mappi3.c
index c80bde657854cbf62a7d5bc9adae8101e6857b6c..6716ffea769a17b9d4423acfd79ccbea81c060ca 100644
--- a/arch/m32r/kernel/io_mappi3.c
+++ b/arch/m32r/kernel/io_mappi3.c
@@ -36,9 +36,6 @@ static inline void *_port2addr(unsigned long port)
 	return (void *)(port + NONCACHE_OFFSET);
 }
 
-#define LAN_IOSTART	0x300
-#define LAN_IOEND	0x320
-
 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 static inline void *__port2addr_ata(unsigned long port)
 {
@@ -59,9 +56,11 @@ static inline void *__port2addr_ata(unsigned long port)
 }
 #endif
 
+#define LAN_IOSTART	0xa0000300
+#define LAN_IOEND	0xa0000320
 static inline void *_port2addr_ne(unsigned long port)
 {
-	return (void *)(port + NONCACHE_OFFSET + 0x10000000);
+	return (void *)(port + 0x10000000);
 }
 
 static inline void *_port2addr_usb(unsigned long port)
diff --git a/arch/m32r/kernel/io_opsput.c b/arch/m32r/kernel/io_opsput.c
index 5ac84b16faaf868a0332ff5c1cf0ad1b11bda18a..4793bd18e11599a187e1f1068cb6b80bc7c13c39 100644
--- a/arch/m32r/kernel/io_opsput.c
+++ b/arch/m32r/kernel/io_opsput.c
@@ -44,11 +44,11 @@ static inline void *_port2addr(unsigned long port)
  * from 0x10000000 to 0x13ffffff on physical address.
  * The base address of LAN controller(LAN91C111) is 0x300.
  */
-#define LAN_IOSTART	0x300
-#define LAN_IOEND	0x320
+#define LAN_IOSTART	0xa0000300
+#define LAN_IOEND	0xa0000320
 static inline void *_port2addr_ne(unsigned long port)
 {
-	return (void *)(port + NONCACHE_OFFSET + 0x10000000);
+	return (void *)(port + 0x10000000);
 }
 static inline void *_port2addr_usb(unsigned long port)
 {
diff --git a/drivers/net/smc91x.h b/drivers/net/smc91x.h
index ac9ce6509eee78af13c014d184b27bb0f5922e64..817f200742c37132b4982bb0a333ebe76096fcb8 100644
--- a/drivers/net/smc91x.h
+++ b/drivers/net/smc91x.h
@@ -230,12 +230,12 @@ SMC_outw(u16 val, void __iomem *ioaddr, int reg)
 #define SMC_CAN_USE_16BIT	1
 #define SMC_CAN_USE_32BIT	0
 
-#define SMC_inb(a, r)		inb((a) + (r) - 0xa0000000)
-#define SMC_inw(a, r)		inw((a) + (r) - 0xa0000000)
-#define SMC_outb(v, a, r)	outb(v, (a) + (r) - 0xa0000000)
-#define SMC_outw(v, a, r)	outw(v, (a) + (r) - 0xa0000000)
-#define SMC_insw(a, r, p, l)	insw((a) + (r) - 0xa0000000, p, l)
-#define SMC_outsw(a, r, p, l)	outsw((a) + (r) - 0xa0000000, p, l)
+#define SMC_inb(a, r)		inb((u32)a) + (r))
+#define SMC_inw(a, r)		inw(((u32)a) + (r))
+#define SMC_outb(v, a, r)	outb(v, ((u32)a) + (r))
+#define SMC_outw(v, a, r)	outw(v, ((u32)a) + (r))
+#define SMC_insw(a, r, p, l)	insw(((u32)a) + (r), p, l)
+#define SMC_outsw(a, r, p, l)	outsw(((u32)a) + (r), p, l)
 
 #define set_irq_type(irq, type)	do {} while(0)