fix s2io regression

 * wrong argument passed to pci_unmap_single() on failure
   exit paths
 * leak in the same area

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index 2be0a0f1b48f..24feb00600ee 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -2430,7 +2430,7 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
                                         (rxdp3->Buffer1_ptr == DMA_ERROR_CODE)) {
                                         pci_unmap_single
                                                 (nic->pdev,
-                                                (dma_addr_t)skb->data,
+                                                (dma_addr_t)rxdp3->Buffer2_ptr,
                                                 dev->mtu + 4,
                                                 PCI_DMA_FROMDEVICE);
                                         goto pci_map_failed;
@@ -6211,7 +6211,7 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
                         if( (rxdp3->Buffer0_ptr == 0) ||
                                 (rxdp3->Buffer0_ptr == DMA_ERROR_CODE)) {
                                 pci_unmap_single (sp->pdev,
-                                        (dma_addr_t)(*skb)->data,
+                                        (dma_addr_t)rxdp3->Buffer2_ptr,
                                         dev->mtu + 4, PCI_DMA_FROMDEVICE);
                                 goto memalloc_failed;
                         }
@@ -6224,7 +6224,10 @@ static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
                         if( (rxdp3->Buffer1_ptr == 0) ||
                                 (rxdp3->Buffer1_ptr == DMA_ERROR_CODE)) {
                                 pci_unmap_single (sp->pdev,
-                                        (dma_addr_t)(*skb)->data,
+                                        (dma_addr_t)rxdp3->Buffer0_ptr,
+                                        BUF0_LEN, PCI_DMA_FROMDEVICE);
+                                pci_unmap_single (sp->pdev,
+                                        (dma_addr_t)rxdp3->Buffer2_ptr,
                                         dev->mtu + 4, PCI_DMA_FROMDEVICE);
                                 goto memalloc_failed;
                         }