if (cb != NULL) { if (cb->buf_buf != NULL) kfree(cb->buf_buf); 
if (cb) { kfree(cb->buf_buf); 
static void cypress_buf_free(struct cypress_buf *cb){	if (cb != NULL) {		if (cb->buf_buf != NULL)			kfree(cb->buf_buf);		kfree(cb);	}}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/1bc3c9e1e44c2059fe2ffa6ff70ad0a925d7b05f/cypress_m8.c/buggy/drivers/usb/serial/cypress_m8.c