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Diffstat (limited to 'arch/i386/kernel/microcode.c')
-rw-r--r--arch/i386/kernel/microcode.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
index 55bc365b8753..dd780a00553f 100644
--- a/arch/i386/kernel/microcode.c
+++ b/arch/i386/kernel/microcode.c
@@ -81,6 +81,7 @@
#include <linux/miscdevice.h>
#include <linux/spinlock.h>
#include <linux/mm.h>
+#include <linux/mutex.h>
#include <asm/msr.h>
#include <asm/uaccess.h>
@@ -114,7 +115,7 @@ MODULE_LICENSE("GPL");
static DEFINE_SPINLOCK(microcode_update_lock);
/* no concurrent ->write()s are allowed on /dev/cpu/microcode */
-static DECLARE_MUTEX(microcode_sem);
+static DEFINE_MUTEX(microcode_mutex);
static void __user *user_buffer; /* user area microcode data buffer */
static unsigned int user_buffer_size; /* it's size */
@@ -444,7 +445,7 @@ static ssize_t microcode_write (struct file *file, const char __user *buf, size_
return -EINVAL;
}
- down(&microcode_sem);
+ mutex_lock(&microcode_mutex);
user_buffer = (void __user *) buf;
user_buffer_size = (int) len;
@@ -453,7 +454,7 @@ static ssize_t microcode_write (struct file *file, const char __user *buf, size_
if (!ret)
ret = (ssize_t)len;
- up(&microcode_sem);
+ mutex_unlock(&microcode_mutex);
return ret;
}