Return correct size if there's enough data in the read buffer

From the mailinglist:

The current git version of libftdi contains a critical bug in
ftdi_read_data. If a read from the device returns more data than requested
the function exits with error -127 (documented as "// never reached")
instead of a correct return code.

diff --git a/src/ftdi.c b/src/ftdi.c
index bbbeb9a..f64301d 100644 (file)
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -1655,6 +1655,7 @@ int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size)
                 /* printf("Returning part: %d - size: %d - offset: %d - ret: %d - remaining: %d\n",
                 part_size, size, offset, ret, ftdi->readbuffer_remaining); */
 
+                return offset;
             }
         }
         gettimeofday(&tv_current,NULL);