[Based on mainline commit 352c1d95e3220d0: "ARC: stop using
pt_regs->orig_r8"]
Stop using orig_r8 as it could get clobbered by ST in trap_with_param,
and further it is semantically not needed either.
Signed-off-by: Vineet Gupta <vgu...@synopsys.com>
---
arch/arc/include/asm/syscall.h | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/arc/include/asm/syscall.h b/arch/arc/include/asm/syscall.h
index 33ab304..29de098 100644
--- a/arch/arc/include/asm/syscall.h
+++ b/arch/arc/include/asm/syscall.h
@@ -18,7 +18,7 @@ static inline long
syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
{
if (user_mode(regs) && in_syscall(regs))
- return regs->orig_r8;
+ return regs->r8;
else
return -1;
}
@@ -26,8 +26,7 @@ syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
static inline void
syscall_rollback(struct task_struct *task, struct pt_regs *regs)
{
- /* XXX: I can't fathom how pt_regs->r8 will be clobbered ? */
- regs->r8 = regs->orig_r8;
+ regs->r0 = regs->orig_r0;
}
static inline long
--
1.8.1.2
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