Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup:
  [x86 setup] Make sure AH=00h when setting a video mode
  [x86 setup] Volatilize asm() statements

5 files changed, 33 insertions, 31 deletions

diff --git a/arch/i386/boot/boot.h b/arch/i386/boot/boot.h
index dec70c9b6050..20bab9431acb 100644
--- a/arch/i386/boot/boot.h
+++ b/arch/i386/boot/boot.h
@@ -87,7 +87,7 @@ static inline void set_fs(u16 seg)
 static inline u16 fs(void)
 {
 	u16 seg;
-	asm("movw %%fs,%0" : "=rm" (seg));
+	asm volatile("movw %%fs,%0" : "=rm" (seg));
 	return seg;
 }
 
@@ -98,7 +98,7 @@ static inline void set_gs(u16 seg)
 static inline u16 gs(void)
 {
 	u16 seg;
-	asm("movw %%gs,%0" : "=rm" (seg));
+	asm volatile("movw %%gs,%0" : "=rm" (seg));
 	return seg;
 }
 
@@ -107,19 +107,19 @@ typedef unsigned int addr_t;
 static inline u8 rdfs8(addr_t addr)
 {
 	u8 v;
-	asm("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
+	asm volatile("movb %%fs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
 	return v;
 }
 static inline u16 rdfs16(addr_t addr)
 {
 	u16 v;
-	asm("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
+	asm volatile("movw %%fs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
 	return v;
 }
 static inline u32 rdfs32(addr_t addr)
 {
 	u32 v;
-	asm("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
+	asm volatile("movl %%fs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
 	return v;
 }
 
@@ -139,19 +139,19 @@ static inline void wrfs32(u32 v, addr_t addr)
 static inline u8 rdgs8(addr_t addr)
 {
 	u8 v;
-	asm("movb %%gs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
+	asm volatile("movb %%gs:%1,%0" : "=r" (v) : "m" (*(u8 *)addr));
 	return v;
 }
 static inline u16 rdgs16(addr_t addr)
 {
 	u16 v;
-	asm("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
+	asm volatile("movw %%gs:%1,%0" : "=r" (v) : "m" (*(u16 *)addr));
 	return v;
 }
 static inline u32 rdgs32(addr_t addr)
 {
 	u32 v;
-	asm("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
+	asm volatile("movl %%gs:%1,%0" : "=r" (v) : "m" (*(u32 *)addr));
 	return v;
 }
 
@@ -180,15 +180,15 @@ static inline int memcmp(const void *s1, const void *s2, size_t len)
 static inline int memcmp_fs(const void *s1, addr_t s2, size_t len)
 {
 	u8 diff;
-	asm("fs; repe; cmpsb; setnz %0"
-	    : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
+	asm volatile("fs; repe; cmpsb; setnz %0"
+		     : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
 	return diff;
 }
 static inline int memcmp_gs(const void *s1, addr_t s2, size_t len)
 {
 	u8 diff;
-	asm("gs; repe; cmpsb; setnz %0"
-	    : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
+	asm volatile("gs; repe; cmpsb; setnz %0"
+		     : "=qm" (diff), "+D" (s1), "+S" (s2), "+c" (len));
 	return diff;
 }
 
diff --git a/arch/i386/boot/cpucheck.c b/arch/i386/boot/cpucheck.c
index 991e8ceae1de..e655a89c5510 100644
--- a/arch/i386/boot/cpucheck.c
+++ b/arch/i386/boot/cpucheck.c
@@ -96,7 +96,8 @@ static int has_fpu(void)
 		asm volatile("movl %0,%%cr0" : : "r" (cr0));
 	}
 
-	asm("fninit ; fnstsw %0 ; fnstcw %1" : "+m" (fsw), "+m" (fcw));
+	asm volatile("fninit ; fnstsw %0 ; fnstcw %1"
+		     : "+m" (fsw), "+m" (fcw));
 
 	return fsw == 0 && (fcw & 0x103f) == 0x003f;
 }
diff --git a/arch/i386/boot/edd.c b/arch/i386/boot/edd.c
index 82b5c846a194..bd138e442ec2 100644
--- a/arch/i386/boot/edd.c
+++ b/arch/i386/boot/edd.c
@@ -30,9 +30,9 @@ static int read_mbr(u8 devno, void *buf)
 	cx = 0x0001;		/* Sector 0-0-1 */
 	dx = devno;
 	bx = (size_t)buf;
-	asm("pushfl; stc; int $0x13; setc %%al; popfl"
-	    : "+a" (ax), "+c" (cx), "+d" (dx), "+b" (bx)
-	    : : "esi", "edi", "memory");
+	asm volatile("pushfl; stc; int $0x13; setc %%al; popfl"
+		     : "+a" (ax), "+c" (cx), "+d" (dx), "+b" (bx)
+		     : : "esi", "edi", "memory");
 
 	return -(u8)ax;		/* 0 or -1 */
 }
diff --git a/arch/i386/boot/tty.c b/arch/i386/boot/tty.c
index 9c668aad3515..f3f14bd26371 100644
--- a/arch/i386/boot/tty.c
+++ b/arch/i386/boot/tty.c
@@ -54,9 +54,9 @@ static u8 gettime(void)
 	u16 ax = 0x0200;
 	u16 cx, dx;
 
-	asm("int $0x1a"
-	    : "+a" (ax), "=c" (cx), "=d" (dx)
-	    : : "ebx", "esi", "edi");
+	asm volatile("int $0x1a"
+		     : "+a" (ax), "=c" (cx), "=d" (dx)
+		     : : "ebx", "esi", "edi");
 
 	return dx >> 8;
 }
@@ -67,7 +67,7 @@ static u8 gettime(void)
 int getchar(void)
 {
 	u16 ax = 0;
-	asm("int $0x16" : "+a" (ax));
+	asm volatile("int $0x16" : "+a" (ax));
 
 	return ax & 0xff;
 }
@@ -75,9 +75,9 @@ int getchar(void)
 static int kbd_pending(void)
 {
 	u8 pending;
-	asm("int $0x16; setnz %0"
-	    : "=rm" (pending)
-	    : "a" (0x0100));
+	asm volatile("int $0x16; setnz %0"
+		     : "=rm" (pending)
+		     : "a" (0x0100));
 	return pending;
 }
 
diff --git a/arch/i386/boot/video-vga.c b/arch/i386/boot/video-vga.c
index 700d09a9c9b3..aef02f9ec0c1 100644
--- a/arch/i386/boot/video-vga.c
+++ b/arch/i386/boot/video-vga.c
@@ -47,16 +47,16 @@ static u8 vga_set_basic_mode(void)
 
 #ifdef CONFIG_VIDEO_400_HACK
 	if (adapter >= ADAPTER_VGA) {
-		asm(INT10
-		    : : "a" (0x1202), "b" (0x0030)
-		    : "ecx", "edx", "esi", "edi");
+		asm volatile(INT10
+			     : : "a" (0x1202), "b" (0x0030)
+			     : "ecx", "edx", "esi", "edi");
 	}
 #endif
 
 	ax = 0x0f00;
-	asm(INT10
-	    : "+a" (ax)
-	    : : "ebx", "ecx", "edx", "esi", "edi");
+	asm volatile(INT10
+		     : "+a" (ax)
+		     : : "ebx", "ecx", "edx", "esi", "edi");
 
 	mode = (u8)ax;
 
@@ -73,9 +73,10 @@ static u8 vga_set_basic_mode(void)
 		mode = 3;
 
 	/* Set the mode */
+	ax = mode;
 	asm volatile(INT10
-		     : : "a" (mode)
-		     : "ebx", "ecx", "edx", "esi", "edi");
+		     : "+a" (ax)
+		     : : "ebx", "ecx", "edx", "esi", "edi");
 	do_restore = 1;
 	return mode;
 }