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synclink_gt fix module reference

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Get module reference on open() by generic HDLC to prevent module from
unloading while interface is active.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Paul Fulghum
2007-08-22 14:01:50 -07:00
committed by Linus Torvalds
parent 1807a1aaf5
commit d4c63b7c74
1 changed files with 4 additions and 0 deletions
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4
drivers/char/synclink_gt.c
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@@ -1565,6 +1565,9 @@ static int hdlcdev_open(struct net_device *dev)
int rc; int rc;
unsigned long flags; unsigned long flags;
if (!try_module_get(THIS_MODULE))
return -EBUSY;
DBGINFO(("%s hdlcdev_open\n", dev->name)); DBGINFO(("%s hdlcdev_open\n", dev->name));
/* generic HDLC layer open processing */ /* generic HDLC layer open processing */
@@ -1634,6 +1637,7 @@ static int hdlcdev_close(struct net_device *dev)
info->netcount=0; info->netcount=0;
spin_unlock_irqrestore(&info->netlock, flags); spin_unlock_irqrestore(&info->netlock, flags);
module_put(THIS_MODULE);
return 0; return 0;
} }