[PATCH] x86/iperm: remove unused pointers

[Alex Shi]

No one use the prev/next pointers in its function after commit 22fe5b0439dd
("x86/ioperm: Move TSS bitmap update to exit to user work"). So better to
remove them.

Signed-off-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> 
Cc: Ingo Molnar <mingo@xxxxxxxxxx> 
Cc: Borislav Petkov <bp@xxxxxxxxx> 
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> 
Cc: x86@xxxxxxxxxx 
Cc: Andy Lutomirski <luto@xxxxxxxxxx> 
Cc: Rik van Riel <riel@xxxxxxxxxxx> 
Cc: Dave Hansen <dave.hansen@xxxxxxxxx> 
Cc: Waiman Long <longman@xxxxxxxxxx> 
Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx> 
Cc: linux-kernel@xxxxxxxxxxxxxxx 
---
 arch/x86/kernel/process.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 61e93a318983..839b5244e3b7 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -615,12 +615,8 @@ void speculation_ctrl_update_current(void)
 
 void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p)
 {
-	struct thread_struct *prev, *next;
 	unsigned long tifp, tifn;
 
-	prev = &prev_p->thread;
-	next = &next_p->thread;
-
 	tifn = READ_ONCE(task_thread_info(next_p)->flags);
 	tifp = READ_ONCE(task_thread_info(prev_p)->flags);
 
-- 
1.8.3.1