Get module reference on open() by generic HDLC
to prevent module from unloading while interface
is active.
Signed-off-by: Paul Fulghum <[email protected]>
--- a/drivers/char/synclink_gt.c 2007-07-08 18:32:17.000000000 -0500
+++ b/drivers/char/synclink_gt.c 2007-08-14 12:27:50.000000000 -0500
@@ -1570,6 +1570,9 @@ static int hdlcdev_open(struct net_devic
int rc;
unsigned long flags;
+ if (!try_module_get(THIS_MODULE))
+ return -EBUSY;
+
DBGINFO(("%s hdlcdev_open\n", dev->name));
/* generic HDLC layer open processing */
@@ -1639,6 +1642,7 @@ static int hdlcdev_close(struct net_devi
info->netcount=0;
spin_unlock_irqrestore(&info->netlock, flags);
+ module_put(THIS_MODULE);
return 0;
}