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-rw-r--r--include/asm-generic/rwsem.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-generic/rwsem.h b/include/asm-generic/rwsem.h
index bb1e2cdeb..75af612f5 100644
--- a/include/asm-generic/rwsem.h
+++ b/include/asm-generic/rwsem.h
@@ -41,7 +41,7 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
{
long tmp;
- while ((tmp = sem->count) >= 0) {
+ while ((tmp = atomic_long_read((atomic_long_t *)&sem->count)) >= 0) {
if (tmp == cmpxchg(&sem->count, tmp,
tmp + RWSEM_ACTIVE_READ_BIAS)) {
return 1;