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Commit 92f22c18 authored by Ralf Baechle's avatar Ralf Baechle
Browse files

[MIPS] Fix atomic*_sub_if_positive return value. 


    
Reported and initial fix by Thomas Koeller <thomas.koeller@baslerweb.com>,
rewritten by me.
    
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 9b6695a8

include/asm-mips/atomic.h

+12 −0
Original line number Diff line number Diff line
@@ -250,7 +250,10 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) 
		"	subu	%0, %1, %3				\n"

		"	bltz	%0, 1f					\n"

		"	sc	%0, %2					\n"

		"	.set	noreorder				\n"

		"	beqzl	%0, 1b					\n"

		"	 subu	%0, %1, %3				\n"

		"	.set	reorder					\n"

		"	sync						\n"

		"1:							\n"

		"	.set	mips0					\n"
@@ -266,7 +269,10 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v) 
		"	subu	%0, %1, %3				\n"

		"	bltz	%0, 1f					\n"

		"	sc	%0, %2					\n"

		"	.set	noreorder				\n"

		"	beqz	%0, 1b					\n"

		"	 subu	%0, %1, %3				\n"

		"	.set	reorder					\n"

		"	sync						\n"

		"1:							\n"

		"	.set	mips0					\n"
@@ -598,7 +604,10 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) 
		"	dsubu	%0, %1, %3				\n"

		"	bltz	%0, 1f					\n"

		"	scd	%0, %2					\n"

		"	.set	noreorder				\n"

		"	beqzl	%0, 1b					\n"

		"	 dsubu	%0, %1, %3				\n"

		"	.set	reorder					\n"

		"	sync						\n"

		"1:							\n"

		"	.set	mips0					\n"
@@ -614,7 +623,10 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v) 
		"	dsubu	%0, %1, %3				\n"

		"	bltz	%0, 1f					\n"

		"	scd	%0, %2					\n"

		"	.set	noreorder				\n"

		"	beqz	%0, 1b					\n"

		"	 dsubu	%0, %1, %3				\n"

		"	.set	reorder					\n"

		"	sync						\n"

		"1:							\n"

		"	.set	mips0					\n"