X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fisdn%2Fi4l%2Fisdn_common.c;h=7188c59a76ff7eda195059786bd4ea7e48a200f5;hb=cdbfc557c43ea1f1f9b7062300ecb1254969814b;hp=0f3c66de69bcec511b89b9c72265ada93b2bc3c2;hpb=77a50df2b14c8d3ee3c58c21c4a0e0157570df09;p=linux-2.6

diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index 0f3c66de69..7188c59a76 100644
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -1732,7 +1732,7 @@ isdn_open(struct inode *ino, struct file *filep)
 	int chidx;
 	int retval = -ENODEV;
 
-
+	lock_kernel();
 	if (minor == ISDN_MINOR_STATUS) {
 		infostruct *p;
 
@@ -1783,6 +1783,7 @@ isdn_open(struct inode *ino, struct file *filep)
 #endif
  out:
 	nonseekable_open(ino, filep);
+	unlock_kernel();
 	return retval;
 }
 
@@ -1977,8 +1978,10 @@ isdn_writebuf_stub(int drvidx, int chan, const u_char __user * buf, int len)
 	if (!skb)
 		return -ENOMEM;
 	skb_reserve(skb, hl);
-	if (copy_from_user(skb_put(skb, len), buf, len))
+	if (copy_from_user(skb_put(skb, len), buf, len)) {
+		dev_kfree_skb(skb);
 		return -EFAULT;
+	}
 	ret = dev->drv[drvidx]->interface->writebuf_skb(drvidx, chan, 1, skb);
 	if (ret <= 0)
 		dev_kfree_skb(skb);