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Commit e23b1c05 authored by Sudip Mukherjee's avatar Sudip Mukherjee Committed by Greg Kroah-Hartman
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frv: add missing atomic64 operations 


[ Upstream commit 4180c4c170a5a33b9987b314d248a9d572d89ab0 ]

Some more atomic64 operations were missing and as a result frv
allmodconfig was failing.  Add the missing operations.

Link: http://lkml.kernel.org/r/1485193844-12850-1-git-send-email-sudip.mukherjee@codethink.co.uk


Signed-off-by: default avatarSudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 91868468

arch/frv/include/asm/atomic.h

+18 −1
Original line number Diff line number Diff line
@@ -139,7 +139,7 @@ static inline void atomic64_dec(atomic64_t *v) 
#define atomic64_sub_and_test(i,v)	(atomic64_sub_return((i), (v)) == 0)

#define atomic64_dec_and_test(v)	(atomic64_dec_return((v)) == 0)

#define atomic64_inc_and_test(v)	(atomic64_inc_return((v)) == 0)



#define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1, 0)



#define atomic_cmpxchg(v, old, new)	(cmpxchg(&(v)->counter, old, new))

#define atomic_xchg(v, new)		(xchg(&(v)->counter, new))
@@ -177,6 +177,23 @@ static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u) 
	return c != u;

}



static inline long long atomic64_dec_if_positive(atomic64_t *v)

{

	long long c, old, dec;



	c = atomic64_read(v);

	for (;;) {

		dec = c - 1;

		if (unlikely(dec < 0))

			break;

		old = atomic64_cmpxchg((v), c, dec);

		if (likely(old == c))

			break;

		c = old;

	}

		return dec;

}



#define ATOMIC_OP(op)							\

static inline int atomic_fetch_##op(int i, atomic_t *v)			\

{									\