From 0a013d6e5e52bc1505b18b218da8d04600a913c0 Mon Sep 17 00:00:00 2001
From: Markus Hitter <mah@jump-ing.de>
Date: Wed, 10 Jun 2015 13:54:29 +0200
Subject: [PATCH] SD card: wrap Petit FatFs code in #ifdef SD.

No need to compile this when not needed and also make sure it's
nowhere used with SD card support disabled.
---
 pff.c        | 6 ++++++
 pff.h        | 6 ++++++
 pff_diskio.c | 4 ++++
 pff_diskio.h | 6 ++++++
 4 files changed, 22 insertions(+)

diff --git a/pff.c b/pff.c
index c6794f0..52deffd 100644
--- a/pff.c
+++ b/pff.c
@@ -37,9 +37,13 @@
   - Moved integer.h content to the end of pff_conf.h, again, to avoid
     file name conflicts.
   - Changed former integer.h content to use fixed width types (int8_t, etc).
+  - Wrapped code in #ifdef SD to compile it only when needed.
 */
 
 #include "pff.h"        /* Petit FatFs configurations and declarations */
+
+#ifdef SD
+
 #include "pff_diskio.h" /* Declarations of low level disk I/O functions */
 
 
@@ -1118,3 +1122,5 @@ FRESULT pf_readdir (
 }
 
 #endif /* _USE_DIR */
+
+#endif /* SD */
diff --git a/pff.h b/pff.h
index 04158d2..9bb2ead 100644
--- a/pff.h
+++ b/pff.h
@@ -15,6 +15,10 @@
 /----------------------------------------------------------------------------*/
 /* Changes for Teacup see pff.c. */
 
+#include "sd.h"
+
+#ifdef SD
+
 #ifndef _PFATFS
 #define _PFATFS 4004    /* Revision ID */
 
@@ -157,3 +161,5 @@ FRESULT pf_readdir (DIR* dj, FILINFO* fno);                 /* Read a directory
 #endif
 
 #endif /* _PFATFS */
+
+#endif /* SD */
diff --git a/pff_diskio.c b/pff_diskio.c
index 3dfe2ef..79e4214 100644
--- a/pff_diskio.c
+++ b/pff_diskio.c
@@ -5,6 +5,8 @@
 
 #include "pff_diskio.h"
 
+#ifdef SD
+
 
 /*-----------------------------------------------------------------------*/
 /* Initialize Disk Drive                                                 */
@@ -72,3 +74,5 @@ DRESULT disk_writep (
 
     return res;
 }
+
+#endif /* SD */
diff --git a/pff_diskio.h b/pff_diskio.h
index d6107cd..e471115 100644
--- a/pff_diskio.h
+++ b/pff_diskio.h
@@ -3,6 +3,10 @@
 /-----------------------------------------------------------------------*/
 /* Changes for Teacup see pff.c. */
 
+#include "sd.h"
+
+#ifdef SD
+
 #ifndef _DISKIO_DEFINED
 #define _DISKIO_DEFINED
 
@@ -41,3 +45,5 @@ DRESULT disk_writep (const BYTE* buff, DWORD sc);
 #endif
 
 #endif  /* _DISKIO_DEFINED */
+
+#endif /* SD */