static void sbdma_emptyring(sbmacdma_t *d){	int idx;	struct sk_buff *sb;		for (idx = 0; idx < d->sbdma_maxdescr; idx++) {		sb = d->sbdma_ctxtable[idx];		if (sb) {			dev_kfree_skb(sb);			d->sbdma_ctxtable[idx] = NULL;		}	}}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/74b0247fbd4b6ed1693a420d85cf50267d840ef4/sb1250-mac.c/buggy/drivers/net/sb1250-mac.c