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authorBen Hutchings <bhutchings@solarflare.com>2008-09-01 12:46:36 +0100
committerJeff Garzik <jgarzik@redhat.com>2008-09-03 09:53:44 -0400
commit5988b63a53e120a9db4439d4512f4c1b17e7170e (patch)
treecad229434f5f3f97205206de09ca6cb442b6da77 /drivers/net/sfc/tx.c
parentb9aafb0e91a079ff9438ce3c532ea46d4cd2f0fc (diff)
downloadop-kernel-dev-5988b63a53e120a9db4439d4512f4c1b17e7170e.zip
op-kernel-dev-5988b63a53e120a9db4439d4512f4c1b17e7170e.tar.gz
sfc: Don't leak PCI DMA maps in the TSO code when the queue fills up
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/sfc/tx.c')
-rw-r--r--drivers/net/sfc/tx.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/sfc/tx.c b/drivers/net/sfc/tx.c
index e5e0bab..0452ea6 100644
--- a/drivers/net/sfc/tx.c
+++ b/drivers/net/sfc/tx.c
@@ -1096,6 +1096,11 @@ static int efx_enqueue_skb_tso(struct efx_tx_queue *tx_queue,
efx_stop_queue(tx_queue->efx);
unwind:
+ /* Free the DMA mapping we were in the process of writing out */
+ if (state.ifc.unmap_len)
+ pci_unmap_page(tx_queue->efx->pci_dev, state.ifc.unmap_addr,
+ state.ifc.unmap_len, PCI_DMA_TODEVICE);
+
efx_enqueue_unwind(tx_queue);
return rc2;
}
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