1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/wimax/i2400m/i2400m-sdio.h b/drivers/net/wimax/i2400m/i2400m-sdio.h
index fba482c08d66..b9c4bed3b457 100644
--- a/drivers/net/wimax/i2400m/i2400m-sdio.h
+++ b/drivers/net/wimax/i2400m/i2400m-sdio.h
@@ -100,6 +100,14 @@ enum {
  * @tx_workqueue: workqeueue used for data TX; we don't use the
  *     system's workqueue as that might cause deadlocks with code in
  *     the bus-generic driver.
+ *
+ * @debugfs_dentry: dentry for the SDIO specific debugfs files
+ *
+ *     Note this value is set to NULL upon destruction; this is
+ *     because some routinges use it to determine if we are inside the
+ *     probe() path or some other path. When debugfs is disabled,
+ *     creation sets the dentry to '(void*) -ENODEV', which is valid
+ *     for the test.
  */
 struct i2400ms {
         struct i2400m i2400m;           /* FIRST! See doc */