X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=include%2Flinux%2Fseqlock.h;h=26e4925bc35bb5f76d28aa55119b4a2c2501091d;hb=b10d911749d37dccfa5873d2088aea3f074b9e45;hp=46000936f8f1d5f39e92aa1e260518475b567e1a;hpb=a4b47ab9464a8200528fad3101668abdd7379cf9;p=karo-tx-linux.git

diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
index 46000936f8f1..26e4925bc35b 100644
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -2,7 +2,7 @@
 #define __LINUX_SEQLOCK_H
 /*
  * Reader/writer consistent mechanism without starving writers. This type of
- * lock for data where the reader wants a consitent set of information
+ * lock for data where the reader wants a consistent set of information
  * and is willing to retry if the information changes.  Readers never
  * block but they may have to retry if a writer is in
  * progress. Writers do not wait for readers. 
@@ -44,8 +44,11 @@ typedef struct {
 #define SEQLOCK_UNLOCKED \
 		 __SEQLOCK_UNLOCKED(old_style_seqlock_init)
 
-#define seqlock_init(x) \
-		do { *(x) = (seqlock_t) __SEQLOCK_UNLOCKED(x); } while (0)
+#define seqlock_init(x)					\
+	do {						\
+		(x)->sequence = 0;			\
+		spin_lock_init(&(x)->lock);		\
+	} while (0)
 
 #define DEFINE_SEQLOCK(x) \
 		seqlock_t x = __SEQLOCK_UNLOCKED(x)
@@ -58,10 +61,10 @@ static inline void write_seqlock(seqlock_t *sl)
 {
 	spin_lock(&sl->lock);
 	++sl->sequence;
-	smp_wmb();			
-}	
+	smp_wmb();
+}
 
-static inline void write_sequnlock(seqlock_t *sl) 
+static inline void write_sequnlock(seqlock_t *sl)
 {
 	smp_wmb();
 	sl->sequence++;
@@ -74,7 +77,7 @@ static inline int write_tryseqlock(seqlock_t *sl)
 
 	if (ret) {
 		++sl->sequence;
-		smp_wmb();			
+		smp_wmb();
 	}
 	return ret;
 }