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-rw-r--r--arch/hexagon/include/asm/atomic.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/hexagon/include/asm/atomic.h b/arch/hexagon/include/asm/atomic.h
index 7aae4cb2a29a..17dc63780c06 100644
--- a/arch/hexagon/include/asm/atomic.h
+++ b/arch/hexagon/include/asm/atomic.h
@@ -26,7 +26,20 @@
#include <asm/cmpxchg.h>
#define ATOMIC_INIT(i) { (i) }
-#define atomic_set(v, i) ((v)->counter = (i))
+
+/* Normal writes in our arch don't clear lock reservations */
+
+static inline void atomic_set(atomic_t *v, int new)
+{
+ asm volatile(
+ "1: r6 = memw_locked(%0);\n"
+ " memw_locked(%0,p0) = %1;\n"
+ " if (!P0) jump 1b;\n"
+ :
+ : "r" (&v->counter), "r" (new)
+ : "memory", "p0", "r6"
+ );
+}
/**
* atomic_read - reads a word, atomically