diff --git a/arch/mips/include/asm/mach-ip27/dma-coherence.h b/arch/mips/include/asm/mach-ip27/dma-coherence.h
index 1daa644..04d8620 100644
--- a/arch/mips/include/asm/mach-ip27/dma-coherence.h
+++ b/arch/mips/include/asm/mach-ip27/dma-coherence.h
@@ -64,7 +64,7 @@ static inline void plat_post_dma_flush(struct device *dev)
 
 static inline int plat_device_is_coherent(struct device *dev)
 {
-	return 1;		/* IP27 non-cohernet mode is unsupported */
+	return 1;		/* IP27 non-coherent mode is unsupported */
 }
 
 #endif /* __ASM_MACH_IP27_DMA_COHERENCE_H */
diff --git a/arch/mips/include/asm/mach-ip27/mangle-port.h b/arch/mips/include/asm/mach-ip27/mangle-port.h
index f6e4912..5184c94 100644
--- a/arch/mips/include/asm/mach-ip27/mangle-port.h
+++ b/arch/mips/include/asm/mach-ip27/mangle-port.h
@@ -8,7 +8,7 @@
 #ifndef __ASM_MACH_IP27_MANGLE_PORT_H
 #define __ASM_MACH_IP27_MANGLE_PORT_H
 
-#define __swizzle_addr_b(port)	(port)
+#define __swizzle_addr_b(port)  ((port) ^ 3)
 #define __swizzle_addr_w(port)	((port) ^ 2)
 #define __swizzle_addr_l(port)	(port)
 #define __swizzle_addr_q(port)	(port)
@@ -20,6 +20,6 @@
 # define ioswabl(a, x)		(x)
 # define __mem_ioswabl(a, x)	cpu_to_le32(x)
 # define ioswabq(a, x)		(x)
-# define __mem_ioswabq(a, x)	cpu_to_le32(x)
+# define __mem_ioswabq(a, x)	cpu_to_le64(x)
 
 #endif /* __ASM_MACH_IP27_MANGLE_PORT_H */
diff --git a/arch/mips/sgi-ip27/ip27-console.c b/arch/mips/sgi-ip27/ip27-console.c
index 45fdfbc..5b95f33 100644
--- a/arch/mips/sgi-ip27/ip27-console.c
+++ b/arch/mips/sgi-ip27/ip27-console.c
@@ -34,6 +34,8 @@ void prom_putchar(char c)
 {
 	struct ioc3_uartregs *uart = console_uart();
 
-	while ((uart->iu_lsr & 0x20) == 0);
+	while ((((u8 __iomem)uart->iu_lsr) & 0x20) == 0)
+		cpu_relax();
+
 	uart->iu_thr = c;
 }