[PATCH] s390: core s390

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

s390 core changes:
 - Fix _raw_spin_trylock for 64 bit.
 - Add clarification to s390 debug debug documentation.

Documentation/s390/s390dbf.txt

@@ -66,9 +66,9 @@ a view can be inspected simply by reading the corresponding proc file.
 All debug logs have an an actual debug level (range from 0 to 6).
 The default level is 3. Event and Exception functions have a 'level'
 parameter. Only debug entries with a level that is lower or equal
-than the actual level are written to the log. This means that high 
-priority log entries should have a low level value whereas low priority
-entries should have a high one. 
+than the actual level are written to the log. This means, when
+writing events, high priority log entries should have a low level
+value whereas low priority entries should have a high one.
 The actual debug level can be changed with the help of the proc-filesystem 
 through writing a number string "x" to the 'level' proc file which is
 provided for every debug log. Debugging can be switched off completely

include/asm-s390/spinlock.h

@@ -70,11 +70,9 @@ extern inline void _raw_spin_lock(spinlock_t *lp)
 
 extern inline int _raw_spin_trylock(spinlock_t *lp)
 {
-#ifndef __s390x__
-	unsigned long result, reg;
-#else /* __s390x__ */
-	unsigned int result, reg;
-#endif /* __s390x__ */
+	unsigned long reg;
+	unsigned int result;
+
 	__asm__ __volatile("    basr  %1,0\n"
 			   "0:  cs    %0,%1,0(%3)"
 			   : "=d" (result), "=&d" (reg), "=m" (lp->lock)
@@ -226,7 +224,7 @@ extern inline int _raw_write_trylock(rwlock_t *rw)
 			     "0: csg %0,%1,0(%3)\n"
 #endif /* __s390x__ */
 			     : "=d" (result), "=&d" (reg), "=m" (rw->lock)
-			     : "a" (&rw->lock), "m" (rw->lock), "0" (0)
+			     : "a" (&rw->lock), "m" (rw->lock), "0" (0UL)
 			     : "cc", "memory" );
 	return result == 0;
 }