X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fm68k%2Fbvme6000%2Frtc.c;h=e8ac3f7d72df6dd457aded95444e69655d16f7c1;hb=5b664cb235e97afbf34db9c4d77f08ebd725335e;hp=a812d03879f891b8e69501f13b2c410ae7241b01;hpb=58a3bb59973e33a428d72fa530a3d1d81feb0e8f;p=pandora-kernel.git

diff --git a/arch/m68k/bvme6000/rtc.c b/arch/m68k/bvme6000/rtc.c
index a812d03879f8..e8ac3f7d72df 100644
--- a/arch/m68k/bvme6000/rtc.c
+++ b/arch/m68k/bvme6000/rtc.c
@@ -10,6 +10,7 @@
 #include <linux/errno.h>
 #include <linux/miscdevice.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/ioport.h>
 #include <linux/capability.h>
 #include <linux/fcntl.h>
@@ -140,10 +141,14 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 
 static int rtc_open(struct inode *inode, struct file *file)
 {
-	if(rtc_status)
+	lock_kernel();
+	if(rtc_status) {
+		unlock_kernel();
 		return -EBUSY;
+	}
 
 	rtc_status = 1;
+	unlock_kernel();
 	return 0;
 }