X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fm32r%2Fboot%2Fcompressed%2Fm32r_sio.c;h=8f9a57271f8345cfd61e43ec5968bdd086f6600a;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=bad5475eff90c17320b27aaad83f17dd3389ff81;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/arch/m32r/boot/compressed/m32r_sio.c b/arch/m32r/boot/compressed/m32r_sio.c
index bad5475ef..8f9a57271 100644
--- a/arch/m32r/boot/compressed/m32r_sio.c
+++ b/arch/m32r/boot/compressed/m32r_sio.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/config.h>
+#include <asm/processor.h>
 
 static void putc(char c);
 
@@ -38,16 +39,17 @@ static int puts(const char *s)
 
 static void putc(char c)
 {
-
-	while ((*BOOT_SIO0STS & 0x3) != 0x3) ;
+	while ((*BOOT_SIO0STS & 0x3) != 0x3)
+		cpu_relax();
 	if (c == '\n') {
 		*BOOT_SIO0TXB = '\r';
-		while ((*BOOT_SIO0STS & 0x3) != 0x3) ;
+		while ((*BOOT_SIO0STS & 0x3) != 0x3)
+			cpu_relax();
 	}
 	*BOOT_SIO0TXB = c;
 }
-#else /* defined(CONFIG_PLAT_M32700UT_Alpha) || defined(CONFIG_PLAT_M32700UT) */
-#ifdef CONFIG_MMU
+#else /* !(CONFIG_PLAT_M32700UT_Alpha) && !(CONFIG_PLAT_M32700UT) */
+#if defined(CONFIG_PLAT_MAPPI2)
 #define SIO0STS	(volatile unsigned short *)(0xa0efd000 + 14)
 #define SIO0TXB	(volatile unsigned short *)(0xa0efd000 + 30)
 #else
@@ -57,11 +59,12 @@ static void putc(char c)
 
 static void putc(char c)
 {
-
-	while ((*SIO0STS & 0x1) == 0) ;
+	while ((*SIO0STS & 0x1) == 0)
+		cpu_relax();
 	if (c == '\n') {
 		*SIO0TXB = '\r';
-		while ((*SIO0STS & 0x1) == 0) ;
+		while ((*SIO0STS & 0x1) == 0)
+			cpu_relax();
 	}
 	*SIO0TXB = c;
 }