X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fsbus%2Fchar%2Fvfc_dev.c;h=1f6cb8ae2784cddaf76aa949033381b271126037;hb=5ab0854dd77a520abe7c3b9c7770972fd3e61e90;hp=d4f8fcded51d8615e1da7cd5996ac715b0defd9e;hpb=786d3693f46579c7cd982e65de9f43eba94e4a57;p=linux-2.6

diff --git a/drivers/sbus/char/vfc_dev.c b/drivers/sbus/char/vfc_dev.c
index d4f8fcded5..1f6cb8ae27 100644
--- a/drivers/sbus/char/vfc_dev.c
+++ b/drivers/sbus/char/vfc_dev.c
@@ -24,6 +24,7 @@
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
 #include <linux/mm.h>
+#include <linux/smp_lock.h>
 
 #include <asm/openprom.h>
 #include <asm/oplib.h>
@@ -178,14 +179,17 @@ static int vfc_open(struct inode *inode, struct file *file)
 {
 	struct vfc_dev *dev;
 
+	lock_kernel();
 	spin_lock(&vfc_dev_lock);
 	dev = vfc_get_dev_ptr(iminor(inode));
 	if (dev == NULL) {
 		spin_unlock(&vfc_dev_lock);
+		unlock_kernel();
 		return -ENODEV;
 	}
 	if (dev->busy) {
 		spin_unlock(&vfc_dev_lock);
+		unlock_kernel();
 		return -EBUSY;
 	}
 
@@ -202,6 +206,7 @@ static int vfc_open(struct inode *inode, struct file *file)
 	vfc_captstat_reset(dev);
 	
 	vfc_unlock_device(dev);
+	unlock_kernel();
 	return 0;
 }