mcheck mce_64: mce_read_sem to mutex

Converted to a mutex, and changed the name to mce_read_mutex.

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce_64.c b/arch/x86/kernel/cpu/mcheck/mce_64.c
index 0adad772d0da..8cd47fe2ef2c 100644
--- a/arch/x86/kernel/cpu/mcheck/mce_64.c
+++ b/arch/x86/kernel/cpu/mcheck/mce_64.c
@@ -564,7 +564,7 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize,
                         loff_t *off)
 {
         unsigned long *cpu_tsc;
-        static DECLARE_MUTEX(mce_read_sem);
+        static DEFINE_MUTEX(mce_read_mutex);
         unsigned next;
         char __user *buf = ubuf;
         int i, err;
@@ -573,12 +573,12 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize,
         if (!cpu_tsc)
                 return -ENOMEM;
 
-        down(&mce_read_sem);
+        mutex_lock(&mce_read_mutex);
         next = rcu_dereference(mcelog.next);
 
         /* Only supports full reads right now */
         if (*off != 0 || usize < MCE_LOG_LEN*sizeof(struct mce)) {
-                up(&mce_read_sem);
+                mutex_unlock(&mce_read_mutex);
                 kfree(cpu_tsc);
                 return -EINVAL;
         }
@@ -621,7 +621,7 @@ static ssize_t mce_read(struct file *filp, char __user *ubuf, size_t usize,
                         memset(&mcelog.entry[i], 0, sizeof(struct mce));
                 }
         }
-        up(&mce_read_sem);
+        mutex_unlock(&mce_read_mutex);
         kfree(cpu_tsc);
         return err ? -EFAULT : buf - ubuf;
 }