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Subject[PATCH 1/1] use limited register constraint for setnz
From: Steven Rostedt <rostedt@goodmis.org>

Impact: fix in compiling

GCC can decide to use %dil when "r" is used, which is not valid for
setnz.

This bug was brought out by Stephen Rothwell's merging of the
branch tracer into linux-next.

[ Thanks to Uros Bizjak for recommending 'q' over 'Q' ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
arch/x86/boot/tty.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/boot/tty.c b/arch/x86/boot/tty.c
index 0be77b3..7e8e8b2 100644
--- a/arch/x86/boot/tty.c
+++ b/arch/x86/boot/tty.c
@@ -74,7 +74,7 @@ static int kbd_pending(void)
{
u8 pending;
asm volatile("int $0x16; setnz %0"
- : "=rm" (pending)
+ : "=qm" (pending)
: "a" (0x0100));
return pending;
}
--
1.5.6.5
--


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