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-rw-r--r--arch/mips/kernel/rtlx.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index b88f1c18ff4..b5564196123 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -28,6 +28,7 @@
#include <linux/vmalloc.h>
#include <linux/elf.h>
#include <linux/seq_file.h>
+#include <linux/smp_lock.h>
#include <linux/syscalls.h>
#include <linux/moduleloader.h>
#include <linux/interrupt.h>
@@ -392,8 +393,12 @@ out:
static int file_open(struct inode *inode, struct file *filp)
{
int minor = iminor(inode);
+ int err;
- return rtlx_open(minor, (filp->f_flags & O_NONBLOCK) ? 0 : 1);
+ lock_kernel();
+ err = rtlx_open(minor, (filp->f_flags & O_NONBLOCK) ? 0 : 1);
+ unlock_kernel();
+ return err;
}
static int file_release(struct inode *inode, struct file *filp)