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| author | Andreas Schwab <schwab@linux-m68k.org> | 2012-01-09 15:10:15 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2012-01-22 14:50:20 +0100 |
| commit | 2a3535069e33d8b416f406c159ce924427315303 (patch) | |
| tree | 2de8aa3a94215260fe91b0edb1c8f5d685413d04 /arch/m68k/atari | |
| parent | c808d3d839ab70c87a6c9356c50569c87661378e (diff) | |
| download | op-kernel-dev-2a3535069e33d8b416f406c159ce924427315303.zip op-kernel-dev-2a3535069e33d8b416f406c159ce924427315303.tar.gz | |
m68k: Fix assembler constraint to prevent overeager gcc optimisation
Passing the address of a variable as an operand to an asm statement
doesn't mark the value of this variable as used, so gcc may optimize its
initialisation away. Fix this by using the "m" constraint instead.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'arch/m68k/atari')
| -rw-r--r-- | arch/m68k/atari/config.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/m68k/atari/config.c b/arch/m68k/atari/config.c index 4203d10..c4ac15c 100644 --- a/arch/m68k/atari/config.c +++ b/arch/m68k/atari/config.c @@ -414,9 +414,9 @@ void __init config_atari(void) * FDC val = 4 -> Supervisor only */ asm volatile ("\n" " .chip 68030\n" - " pmove %0@,%/tt1\n" + " pmove %0,%/tt1\n" " .chip 68k" - : : "a" (&tt1_val)); + : : "m" (tt1_val)); } else { asm volatile ("\n" " .chip 68040\n" @@ -569,10 +569,10 @@ static void atari_reset(void) : "d0"); } else asm volatile ("\n" - " pmove %0@,%%tc\n" + " pmove %0,%%tc\n" " jmp %1@" : /* no outputs */ - : "a" (&tc_val), "a" (reset_addr)); + : "m" (tc_val), "a" (reset_addr)); } |
