[PATCH 6.6.y 4/5] entry: Remove unused syscall argument from syscall_trace_enter()

[Sasha Levin <sashal@kernel.org>]

From: Jinjie Ruan <ruanjinjie@huawei.com>

[ Upstream commit 03150a9f84b328f5c724b8ed9ff8600c2d7e2d7b ]

The 'syscall' argument of syscall_trace_enter() is immediately overwritten
before any real use and serves only as a local variable, so drop the
parameter.

No functional change intended.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260128031934.3906955-2-ruanjinjie@huawei.com

[ sashal: Reduced backport -- upstream 03150a9f84b32 touches 2 file(s), this
  backport carries 1. Not backported here:
  kernel/entry/syscall-common.c
  This note is generated from the file lists only; see the resolution record
  for the reasoning. ]

Stable-dep-of: 4a3591287fb7 ("entry: Fix seccomp bypass after ptrace with TSYNC")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/entry-common.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index 7f05293bf8ee1..add81461b3200 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -54,10 +54,10 @@ bool syscall_user_dispatch(struct pt_regs *regs);
 long syscall_enter_audit(struct pt_regs *regs, long syscall,
 			 unsigned long work);
 
-static __always_inline long syscall_trace_enter(struct pt_regs *regs, long syscall,
+static __always_inline long syscall_trace_enter(struct pt_regs *regs,
 						unsigned long work)
 {
-	long ret = 0;
+	long syscall, ret = 0;
 
 	/*
 	 * Handle Syscall User Dispatch.  This must comes first, since
@@ -117,7 +117,7 @@ static __always_inline long syscall_enter_from_user_mode_work(struct pt_regs *re
 	unsigned long work = READ_ONCE(current_thread_info()->syscall_work);
 
 	if (work & SYSCALL_WORK_ENTER)
-		syscall = syscall_trace_enter(regs, syscall, work);
+		syscall = syscall_trace_enter(regs, work);
 
 	return syscall;
 }
-- 
2.53.0