[S390] Remove owner_pc member from raw_spinlock_t.

Used to contain the address of the holder of the lock. But since the
spinlock code is not inlined anymore all locks contain the same address
anyway. And since in addtition nobody complained about that for ages
its obviously unused. So remove it.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 4 insertions, 8 deletions

diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c
index 8d76403fcf89..59c56c3d72d0 100644
--- a/arch/s390/lib/spinlock.c
+++ b/arch/s390/lib/spinlock.c
@@ -39,7 +39,7 @@ static inline void _raw_yield_cpu(int cpu)
                 _raw_yield();
 }
 
-void _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc)
+void _raw_spin_lock_wait(raw_spinlock_t *lp)
 {
         int count = spin_retry;
         unsigned int cpu = ~smp_processor_id();
@@ -53,15 +53,13 @@ void _raw_spin_lock_wait(raw_spinlock_t *lp, unsigned int pc)
                 }
                 if (__raw_spin_is_locked(lp))
                         continue;
-                if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0) {
-                        lp->owner_pc = pc;
+                if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0)
                         return;
-                }
         }
 }
 EXPORT_SYMBOL(_raw_spin_lock_wait);
 
-int _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc)
+int _raw_spin_trylock_retry(raw_spinlock_t *lp)
 {
         unsigned int cpu = ~smp_processor_id();
         int count;
@@ -69,10 +67,8 @@ int _raw_spin_trylock_retry(raw_spinlock_t *lp, unsigned int pc)
         for (count = spin_retry; count > 0; count--) {
                 if (__raw_spin_is_locked(lp))
                         continue;
-                if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0) {
-                        lp->owner_pc = pc;
+                if (_raw_compare_and_swap(&lp->owner_cpu, 0, cpu) == 0)
                         return 1;
-                }
         }
         return 0;
 }