Commit b10fa7b6 authored by Richard Kuo's avatar Richard Kuo
Browse files

Hexagon: fix atomic_set 



Normal writes in our our architecture don't invalidate lock
reservations.

Signed-off-by: default avatarRichard Kuo <rkuo@codeaurora.org>
parent 17ca896d

arch/hexagon/include/asm/atomic.h

+14 −1
Original line number Diff line number Diff line
@@ -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