s390/cio/ioasm: Convert to use flag output macros

Use flag output macros in inline asm to allow for better code generation if
the compiler has support for the flag output constraint.

Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

Author: hcahca

drivers/s390/cio/ioasm.c

@@ -8,6 +8,7 @@
 #include <asm/asm-extable.h>
 #include <asm/chpid.h>
 #include <asm/schid.h>
+#include <asm/asm.h>
 #include <asm/crw.h>
 
 #include "ioasm.h"
@@ -18,19 +19,20 @@
 static inline int __stsch(struct subchannel_id schid, struct schib *addr)
 {
 	unsigned long r1 = *(unsigned int *)&schid;
-	int ccode = -EIO;
+	int ccode, exception;
 
+	exception = 1;
 	asm volatile(
 		"	lgr	1,%[r1]\n"
 		"	stsch	%[addr]\n"
-		"0:	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
+		"0:	lhi	%[exc],0\n"
 		"1:\n"
+		CC_IPM(cc)
 		EX_TABLE(0b, 1b)
-		: [cc] "+&d" (ccode), [addr] "=Q" (*addr)
+		: CC_OUT(cc, ccode), [addr] "=Q" (*addr), [exc] "+d" (exception)
 		: [r1] "d" (r1)
-		: "cc", "1");
-	return ccode;
+		: CC_CLOBBER_LIST("1"));
+	return exception ? -EIO : CC_TRANSFORM(ccode);
 }
 
 int stsch(struct subchannel_id schid, struct schib *addr)
@@ -47,19 +49,20 @@ EXPORT_SYMBOL(stsch);
 static inline int __msch(struct subchannel_id schid, struct schib *addr)
 {
 	unsigned long r1 = *(unsigned int *)&schid;
-	int ccode = -EIO;
+	int ccode, exception;
 
+	exception = 1;
 	asm volatile(
 		"	lgr	1,%[r1]\n"
 		"	msch	%[addr]\n"
-		"0:	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
+		"0:	lhi	%[exc],0\n"
 		"1:\n"
+		CC_IPM(cc)
 		EX_TABLE(0b, 1b)
-		: [cc] "+&d" (ccode)
+		: CC_OUT(cc, ccode), [exc] "+d" (exception)
 		: [r1] "d" (r1), [addr] "Q" (*addr)
-		: "cc", "1");
-	return ccode;
+		: CC_CLOBBER_LIST("1"));
+	return exception ? -EIO : CC_TRANSFORM(ccode);
 }
 
 int msch(struct subchannel_id schid, struct schib *addr)
@@ -80,12 +83,11 @@ static inline int __tsch(struct subchannel_id schid, struct irb *addr)
 	asm volatile(
 		"	lgr	1,%[r1]\n"
 		"	tsch	%[addr]\n"
-		"	ipm	%[cc]\n"
-		"	srl	%[cc],28"
-		: [cc] "=&d" (ccode), [addr] "=Q" (*addr)
+		CC_IPM(cc)
+		: CC_OUT(cc, ccode), [addr] "=Q" (*addr)
 		: [r1] "d" (r1)
-		: "cc", "1");
-	return ccode;
+		: CC_CLOBBER_LIST("1"));
+	return CC_TRANSFORM(ccode);
 }
 
 int tsch(struct subchannel_id schid, struct irb *addr)
@@ -101,19 +103,20 @@ int tsch(struct subchannel_id schid, struct irb *addr)
 static inline int __ssch(struct subchannel_id schid, union orb *addr)
 {
 	unsigned long r1 = *(unsigned int *)&schid;
-	int ccode = -EIO;
+	int ccode, exception;
 
+	exception = 1;
 	asm volatile(
 		"	lgr	1,%[r1]\n"
 		"	ssch	%[addr]\n"
-		"0:	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
+		"0:	lhi	%[exc],0\n"
 		"1:\n"
+		CC_IPM(cc)
 		EX_TABLE(0b, 1b)
-		: [cc] "+&d" (ccode)
+		: CC_OUT(cc, ccode), [exc] "+d" (exception)
 		: [r1] "d" (r1), [addr] "Q" (*addr)
-		: "cc", "memory", "1");
-	return ccode;
+		: CC_CLOBBER_LIST("memory", "1"));
+	return CC_TRANSFORM(ccode);
 }
 
 int ssch(struct subchannel_id schid, union orb *addr)
@@ -135,12 +138,11 @@ static inline int __csch(struct subchannel_id schid)
 	asm volatile(
 		"	lgr	1,%[r1]\n"
 		"	csch\n"
-		"	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
-		: [cc] "=&d" (ccode)
+		CC_IPM(cc)
+		: CC_OUT(cc, ccode)
 		: [r1] "d" (r1)
-		: "cc", "1");
-	return ccode;
+		: CC_CLOBBER_LIST("1"));
+	return CC_TRANSFORM(ccode);
 }
 
 int csch(struct subchannel_id schid)
@@ -160,11 +162,11 @@ int tpi(struct tpi_info *addr)
 
 	asm volatile(
 		"	tpi	%[addr]\n"
-		"	ipm	%[cc]\n"
-		"	srl	%[cc],28"
-		: [cc] "=&d" (ccode), [addr] "=Q" (*addr)
+		CC_IPM(cc)
+		: CC_OUT(cc, ccode), [addr] "=Q" (*addr)
 		:
-		: "cc");
+		: CC_CLOBBER);
+	ccode = CC_TRANSFORM(ccode);
 	trace_s390_cio_tpi(addr, ccode);
 
 	return ccode;
@@ -173,17 +175,19 @@ int tpi(struct tpi_info *addr)
 int chsc(void *chsc_area)
 {
 	typedef struct { char _[4096]; } addr_type;
-	int cc = -EIO;
+	int cc, exception;
 
+	exception = 1;
 	asm volatile(
 		"	.insn	rre,0xb25f0000,%[chsc_area],0\n"
-		"0:	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
+		"0:	lhi	%[exc],0\n"
 		"1:\n"
+		CC_IPM(cc)
 		EX_TABLE(0b, 1b)
-		: [cc] "+&d" (cc), "+m" (*(addr_type *)chsc_area)
+		: CC_OUT(cc, cc), "+m" (*(addr_type *)chsc_area), [exc] "+d" (exception)
 		: [chsc_area] "d" (chsc_area)
-		: "cc");
+		: CC_CLOBBER);
+	cc = exception ? -EIO : CC_TRANSFORM(cc);
 	trace_s390_cio_chsc(chsc_area, cc);
 
 	return cc;
@@ -198,12 +202,11 @@ static inline int __rsch(struct subchannel_id schid)
 	asm volatile(
 		"	lgr	1,%[r1]\n"
 		"	rsch\n"
-		"	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
-		: [cc] "=&d" (ccode)
+		CC_IPM(cc)
+		: CC_OUT(cc, ccode)
 		: [r1] "d" (r1)
-		: "cc", "memory", "1");
-	return ccode;
+		: CC_CLOBBER_LIST("memory", "1"));
+	return CC_TRANSFORM(ccode);
 }
 
 int rsch(struct subchannel_id schid)
@@ -224,12 +227,11 @@ static inline int __hsch(struct subchannel_id schid)
 	asm volatile(
 		"	lgr	1,%[r1]\n"
 		"	hsch\n"
-		"	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
-		: [cc] "=&d" (ccode)
+		CC_IPM(cc)
+		: CC_OUT(cc, ccode)
 		: [r1] "d" (r1)
-		: "cc", "1");
-	return ccode;
+		: CC_CLOBBER_LIST("1"));
+	return CC_TRANSFORM(ccode);
 }
 
 int hsch(struct subchannel_id schid)
@@ -256,7 +258,7 @@ static inline int __xsch(struct subchannel_id schid)
 		: [cc] "=&d" (ccode)
 		: [r1] "d" (r1)
 		: "cc", "1");
-	return ccode;
+	return CC_TRANSFORM(ccode);
 }
 
 int xsch(struct subchannel_id schid)
@@ -275,12 +277,11 @@ static inline int __stcrw(struct crw *crw)
 
 	asm volatile(
 		"	stcrw	%[crw]\n"
-		"	ipm	%[cc]\n"
-		"	srl	%[cc],28\n"
-		: [cc] "=&d" (ccode), [crw] "=Q" (*crw)
+		CC_IPM(cc)
+		: CC_OUT(cc, ccode), [crw] "=Q" (*crw)
 		:
-		: "cc");
-	return ccode;
+		: CC_CLOBBER);
+	return CC_TRANSFORM(ccode);
 }
 
 static inline int _stcrw(struct crw *crw)