From 7717348bf50a65dce14ef665c84f64f8ed0324d2 Mon Sep 17 00:00:00 2001
From: Damjan Adamic <projectkk2glider@gmail.com>
Date: Mon, 1 Dec 2014 19:11:05 +0100
Subject: [PATCH] Fixed missing mutex unlock in FatFs f_close() and
 f_closedir()

---
 radio/src/FatFs/ff.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/radio/src/FatFs/ff.c b/radio/src/FatFs/ff.c
index 9c887c459..b32d1ada0 100644
--- a/radio/src/FatFs/ff.c
+++ b/radio/src/FatFs/ff.c
@@ -2865,6 +2865,11 @@ FRESULT f_close (
 			unlock_fs(fs, FR_OK);		/* Unlock volume */
 #endif
 		}
+#if _FS_REENTRANT
+		else if (res == FR_NOT_READY) {
+			unlock_fs(fp->fs, res);	
+		}
+#endif
 	}
 	return res;
 }
@@ -3247,6 +3252,11 @@ FRESULT f_closedir (
 		unlock_fs(fs, FR_OK);		/* Unlock volume */
 #endif
 	}
+#if _FS_REENTRANT
+	else if (res == FR_NOT_READY) {
+		unlock_fs(dp->fs, res);	
+	}
+#endif
 	return res;
 }