From: Paul Fulghum <paulkf@microgate.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH] synclink_gt fix module reference
Date: Tue, 14 Aug 2007 12:39:15 -0500 [thread overview]
Message-ID: <1187113155.16053.2.camel@x2.microgate.com> (raw)
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>
--- 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;
}
reply other threads:[~2007-08-14 18:39 UTC|newest]
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