[PATCH] m68k: syscall: fix syscall_get_arguments() argument mapping

[Yiqi Sun]

On m68k, syscall_get_arguments() currently returns orig_d0 as args[0],
followed by d1-d5 as args[1..5].

However, syscall arguments are passed in d1-d5 and a0, so args[0]
should reflect d1, and the full argument set should include a0.

Fix the mapping by copying all six arguments from the saved register
block starting at d1.

Fixes: 6baaade15594 ("m68k: Add kernel seccomp support")
Signed-off-by: Yiqi Sun <sunyiqixm@xxxxxxxxx>
---
 arch/m68k/include/asm/syscall.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/m68k/include/asm/syscall.h b/arch/m68k/include/asm/syscall.h
index bf84b160c2eb..2e268eeedad3 100644
--- a/arch/m68k/include/asm/syscall.h
+++ b/arch/m68k/include/asm/syscall.h
@@ -52,10 +52,7 @@ static inline void syscall_get_arguments(struct task_struct *task,
 					 struct pt_regs *regs,
 					 unsigned long *args)
 {
-	args[0] = regs->orig_d0;
-	args++;
-
-	memcpy(args, &regs->d1, 5 * sizeof(args[0]));
+	memcpy(args, &regs->d1, 6 * sizeof(args[0]));
 }
 
 static inline void syscall_set_arguments(struct task_struct *task,
-- 
2.34.1