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-rw-r--r--net/irda/irda_device.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/net/irda/irda_device.c b/net/irda/irda_device.c
index fda299e300c..9b9bb003c5a 100644
--- a/net/irda/irda_device.c
+++ b/net/irda/irda_device.c
@@ -125,8 +125,15 @@ void irda_device_set_media_busy(struct net_device *dev, int status)
self = (struct irlap_cb *) dev->atalk_ptr;
- IRDA_ASSERT(self != NULL, return;);
- IRDA_ASSERT(self->magic == LAP_MAGIC, return;);
+ /* Some drivers may enable the receive interrupt before calling
+ * irlap_open(), or they may disable the receive interrupt
+ * after calling irlap_close().
+ * The IrDA stack is protected from this in irlap_driver_rcv().
+ * However, the driver calls directly the wrapper, that calls
+ * us directly. Make sure we protect ourselves.
+ * Jean II */
+ if (!self || self->magic != LAP_MAGIC)
+ return;
if (status) {
self->media_busy = TRUE;