[PATCH] x86/process: remove set but not used varibles 'prev' and 'next'

[yu kuai]

Fixes gcc '-Wunused-but-set-variable' warning:

arch/x86/kernel/process.c: In function â__switch_to_xtraâ:
arch/x86/kernel/process.c:618:31: warning: variable ânextâ set
but not used [-Wunused-but-set-variable]
arch/x86/kernel/process.c:618:24: warning: variable âprevâ set
but not used [-Wunused-but-set-variable]

They are never used, and so can be removed.

Signed-off-by: yu kuai <yukuai3@xxxxxxxxxx>
---
 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);
 
-- 
2.17.2