circbuf: Move to lib_generic and conditionally compile

circbuf could be used as a generic library and is only currently
needed when CONFIG_USB_TTY is defined.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

1 files changed, 0 insertions, 110 deletions

diff --git a/common/circbuf.c b/common/circbuf.c
deleted file mode 100644
index 2332c63717..0000000000
--- a/common/circbuf.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * (C) Copyright 2003
- * Gerry Hamel, geh@ti.com, Texas Instruments
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307	 USA
- *
- */
-
-#include <common.h>
-#include <malloc.h>
-
-#include <circbuf.h>
-
-
-int buf_init (circbuf_t * buf, unsigned int size)
-{
-	assert (buf != NULL);
-
-	buf->size = 0;
-	buf->totalsize = size;
-	buf->data = (char *) malloc (sizeof (char) * size);
-	assert (buf->data != NULL);
-
-	buf->top = buf->data;
-	buf->tail = buf->data;
-	buf->end = &(buf->data[size]);
-
-	return 1;
-}
-
-int buf_free (circbuf_t * buf)
-{
-	assert (buf != NULL);
-	assert (buf->data != NULL);
-
-	free (buf->data);
-	memset (buf, 0, sizeof (circbuf_t));
-
-	return 1;
-}
-
-int buf_pop (circbuf_t * buf, char *dest, unsigned int len)
-{
-	unsigned int i;
-	char *p = buf->top;
-
-	assert (buf != NULL);
-	assert (dest != NULL);
-
-	/* Cap to number of bytes in buffer */
-	if (len > buf->size)
-		len = buf->size;
-
-	for (i = 0; i < len; i++) {
-		dest[i] = *p++;
-		/* Bounds check. */
-		if (p == buf->end) {
-			p = buf->data;
-		}
-	}
-
-	/* Update 'top' pointer */
-	buf->top = p;
-	buf->size -= len;
-
-	return len;
-}
-
-int buf_push (circbuf_t * buf, const char *src, unsigned int len)
-{
-	/* NOTE:  this function allows push to overwrite old data. */
-	unsigned int i;
-	char *p = buf->tail;
-
-	assert (buf != NULL);
-	assert (src != NULL);
-
-	for (i = 0; i < len; i++) {
-		*p++ = src[i];
-		if (p == buf->end) {
-			p = buf->data;
-		}
-		/* Make sure pushing too much data just replaces old data */
-		if (buf->size < buf->totalsize) {
-			buf->size++;
-		} else {
-			buf->top++;
-			if (buf->top == buf->end) {
-				buf->top = buf->data;
-			}
-		}
-	}
-
-	/* Update 'tail' pointer */
-	buf->tail = p;
-
-	return len;
-}