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authorPaul Fulghum <paulkf@microgate.com>2007-08-22 21:01:50 (GMT)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-08-23 02:52:46 (GMT)
commitd4c63b7c74507c424afcc9c80ba77a55bfb0d07e (patch)
tree787e2771cff667e7e2494138475409c27e511517 /drivers/char
parent1807a1aaf5f2a35ea6d4b527b28bc8889d255a2f (diff)
downloadlinux-d4c63b7c74507c424afcc9c80ba77a55bfb0d07e.tar.xz
synclink_gt fix module reference
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>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/synclink_gt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index bbb7f12..2f97d2f 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -1565,6 +1565,9 @@ static int hdlcdev_open(struct net_device *dev)
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 */
@@ -1634,6 +1637,7 @@ static int hdlcdev_close(struct net_device *dev)
info->netcount=0;
spin_unlock_irqrestore(&info->netlock, flags);
+ module_put(THIS_MODULE);
return 0;
}