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Commit 9bb2b31e authored by Divy Le Ray's avatar Divy Le Ray Committed by David S. Miller
Browse files

cxgb3: release page ref on mapping error 



Release page chunk reference in case we fail to map it.

Signed-off-by: default avatarDivy Le Ray <divy@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 26b3871d

drivers/net/cxgb3/sge.c

+14 −12
Original line number Diff line number Diff line
@@ -338,6 +338,18 @@ static inline int should_restart_tx(const struct sge_txq *q) 
	return q->in_use - r < (q->size >> 1);

}



static void clear_rx_desc(const struct sge_fl *q, struct rx_sw_desc *d)

{

	if (q->use_pages) {

		if (d->pg_chunk.page)

			put_page(d->pg_chunk.page);

		d->pg_chunk.page = NULL;

	} else {

		kfree_skb(d->skb);

		d->skb = NULL;

	}

}



/**

 *	free_rx_bufs - free the Rx buffers on an SGE free list

 *	@pdev: the PCI device associated with the adapter
@@ -355,14 +367,7 @@ static void free_rx_bufs(struct pci_dev *pdev, struct sge_fl *q) 


		pci_unmap_single(pdev, pci_unmap_addr(d, dma_addr),

				 q->buf_size, PCI_DMA_FROMDEVICE);

		if (q->use_pages) {

			if (d->pg_chunk.page)

				put_page(d->pg_chunk.page);

			d->pg_chunk.page = NULL;

		} else {

			kfree_skb(d->skb);

			d->skb = NULL;

		}

		clear_rx_desc(q, d);

		if (++cidx == q->size)

			cidx = 0;

	}
@@ -475,10 +480,7 @@ nomem: q->alloc_failed++; 
		err = add_one_rx_buf(buf_start, q->buf_size, d, sd, q->gen,

				     adap->pdev);

		if (unlikely(err)) {

			if (!q->use_pages) {

				kfree_skb(sd->skb);

				sd->skb = NULL;

			}

			clear_rx_desc(q, sd);

			break;

		}