commit: 8c91c5325e107ec17e40a59a47c6517387d64eb7 From: H. Peter Anvin <[email protected]> Date: Fri, 6 Apr 2012 09:30:57 -0700 Subject: x86: Use correct byte-sized register constraint in __add()
Similar to: 2ca052a x86: Use correct byte-sized register constraint in __xchg_op() ... the __add() macro also needs to use a "q" constraint in the byte-sized case, lest we try to generate an illegal register. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]> Cc: Jeremy Fitzhardinge <[email protected]> Cc: Leigh Scott <[email protected]> Cc: Thomas Reitmayr <[email protected]> Cc: <[email protected]> v3.3 --- arch/x86/include/asm/cmpxchg.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h index bc18d0e..99480e5 100644 --- a/arch/x86/include/asm/cmpxchg.h +++ b/arch/x86/include/asm/cmpxchg.h @@ -173,7 +173,7 @@ extern void __add_wrong_size(void) switch (sizeof(*(ptr))) { \ case __X86_CASE_B: \ asm volatile (lock "addb %b1, %0\n" \ - : "+m" (*(ptr)) : "ri" (inc) \ + : "+m" (*(ptr)) : "qi" (inc) \ : "memory", "cc"); \ break; \ case __X86_CASE_W: \ -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
