alternative_input() and alternative_io() arbitrarily require input
constraint operand numbering to start at index 1.  No more callers rely
on that.  Simplify the interfaces by removing that restriction.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
 arch/x86/include/asm/alternative.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
index 484dfea35aaa..3804b82cb03c 100644
--- a/arch/x86/include/asm/alternative.h
+++ b/arch/x86/include/asm/alternative.h
@@ -214,17 +214,15 @@ static inline int alternatives_text_reserved(void *start, void *end)
  *
  * Peculiarities:
  * No memory clobber here.
- * Argument numbers start with 1.
- * Leaving an unused argument 0 to keep API compatibility.
  */
 #define alternative_input(oldinstr, newinstr, ft_flags, input...)	\
 	asm_inline volatile(ALTERNATIVE(oldinstr, newinstr, ft_flags) \
-		: : "i" (0), ## input)
+		: : input)
 
 /* Like alternative_input, but with a single output argument */
 #define alternative_io(oldinstr, newinstr, ft_flags, output, input...)	\
 	asm_inline volatile(ALTERNATIVE(oldinstr, newinstr, ft_flags)	\
-		: output : "i" (0), ## input)
+		: output : input)
 
 /*
  * Like alternative_io, but for replacing a direct call with another one.
-- 
2.48.1