From 3ef25dc49d4bf64ca919a9ef7564c8e1f92647ed Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Thu, 17 Mar 2016 09:55:10 -0600
Subject: [PATCH] AT24xx: Add logic to unregister from the procfs file system
 if the driver is uninitialized

---
 drivers/mtd/at24xx.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/mtd/at24xx.c b/drivers/mtd/at24xx.c
index ee324be4dff..76d2cf26593 100644
--- a/drivers/mtd/at24xx.c
+++ b/drivers/mtd/at24xx.c
@@ -687,6 +687,15 @@ void at24c_uninitialize(FAR struct mtd_dev_s *mtd)
 {
   FAR struct at24c_dev_s *priv = (FAR struct at24c_dev_s *)mtd;
   DEBUGASSERT(priv != NULL);
+
+#ifdef CONFIG_MTD_REGISTRATION
+  /* Unregister the MTD with the procfs system if enabled */
+
+  mtd_unregister(&priv->mtd);
+#endif
+
+  /* Free the MTD driver instance */
+
   kmm_free(priv);
 }
 #endif /* CONFIG_AT24XX_MULTI */