From 4ece2c24d8ffb3ce77ae94effa657e49c1f536c2 Mon Sep 17 00:00:00 2001
From: Thomas Jarosch <opensource@intra2net.com>
Date: Thu, 25 Mar 2004 21:44:30 +0000
Subject: [PATCH] libftdi: (tomj) fixed readbuffer offset sizes, fixed read return code

---
 ftdi/ftdi.c |    7 +++----
 ftdi/ftdi.h |    4 ++--
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/ftdi/ftdi.c b/ftdi/ftdi.c
index 0c2314a..84f768a 100644
--- a/ftdi/ftdi.c
+++ b/ftdi/ftdi.c
@@ -276,10 +276,8 @@ int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size) {
 
 	// printf("Got bytes from buffer: %d\n", ftdi->readbuffer_remaining);
 
-	// Fix offsets
+	// Fix offset
 	offset += ftdi->readbuffer_remaining;
-	ftdi->readbuffer_remaining = 0;
-	ftdi->readbuffer_offset = 0;
     }
     
     // do the actual USB read
@@ -318,10 +316,11 @@ int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size) {
 
 		ftdi->readbuffer_offset += part_size;
 		ftdi->readbuffer_remaining = ret-part_size;
+		offset += part_size;
 		
 		// printf("Returning part: %d - size: %d - offset: %d - ret: %d - remaining: %d\n", part_size, size, offset, ret, ftdi->readbuffer_remaining);
 
-		return part_size;
+		return offset;
 	    }
 	}
     }
diff --git a/ftdi/ftdi.h b/ftdi/ftdi.h
index 28a40bd..ea78d3c 100644
--- a/ftdi/ftdi.h
+++ b/ftdi/ftdi.h
@@ -28,8 +28,8 @@ struct ftdi_context {
     int baudrate;
     unsigned char bitbang_enabled;
     unsigned char *readbuffer;
-    unsigned char readbuffer_offset;
-    unsigned char readbuffer_remaining;
+    unsigned int readbuffer_offset;
+    unsigned int readbuffer_remaining;
     unsigned int readbuffer_chunksize;
     unsigned int writebuffer_chunksize;
  
-- 
1.7.1