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path: root/drivers/net/ppp_generic.c
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Diffstat (limited to 'drivers/net/ppp_generic.c')
-rw-r--r--drivers/net/ppp_generic.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index dc8505062da..83625fdff3d 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -39,6 +39,7 @@
#include <linux/if_arp.h>
#include <linux/ip.h>
#include <linux/tcp.h>
+#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/rwsem.h>
#include <linux/stddef.h>
@@ -351,9 +352,9 @@ static const int npindex_to_ethertype[NUM_NP] = {
* Open instances of /dev/ppp can be in one of three states:
* unattached, attached to a ppp unit, or attached to a ppp channel.
*/
-/* No BKL needed here */
static int ppp_open(struct inode *inode, struct file *file)
{
+ cycle_kernel_lock();
/*
* This could (should?) be enforced by the permissions on /dev/ppp.
*/