if (pb != NULL) { if (pb->buf_buf != NULL) kfree(pb->buf_buf); 
if (pb) { kfree(pb->buf_buf); 
static void pl2303_buf_free(struct pl2303_buf *pb){	if (pb != NULL) {		if (pb->buf_buf != NULL)			kfree(pb->buf_buf);		kfree(pb);	}}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/1bc3c9e1e44c2059fe2ffa6ff70ad0a925d7b05f/pl2303.c/clean/drivers/usb/serial/pl2303.c