diff mbox

[net-2.6,1/2] ixgbe: Fix ixgbe_tx_map error path

Message ID 20100203231224.15352.27988.stgit@localhost.localdomain
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Kirsher, Jeffrey T Feb. 3, 2010, 11:12 p.m. UTC 
From: Anton Blanchard <anton@samba.org>

Commit e5a43549f7a58509a91b299a51337d386697b92c (ixgbe: remove
skb_dma_map/unmap calls from driver) looks to have introduced a bug in
ixgbe_tx_map. If we get an error from a PCI DMA call, we loop backwards
through count until it becomes -1 and return that.

The caller of ixgbe_tx_map expects 0 on error, so return that instead.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

 drivers/net/ixgbe/ixgbe_main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


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Comments

David Miller Feb. 4, 2010, 3:17 a.m. UTC | #1 
From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Wed, 03 Feb 2010 15:12:51 -0800

> From: Anton Blanchard <anton@samba.org>
> 
> Commit e5a43549f7a58509a91b299a51337d386697b92c (ixgbe: remove
> skb_dma_map/unmap calls from driver) looks to have introduced a bug in
> ixgbe_tx_map. If we get an error from a PCI DMA call, we loop backwards
> through count until it becomes -1 and return that.
> 
> The caller of ixgbe_tx_map expects 0 on error, so return that instead.
> 
> Signed-off-by: Anton Blanchard <anton@samba.org>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Applied.
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diff mbox

Patch

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index b5f64ad..37e2af0 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -5179,7 +5179,7 @@  dma_error:
 		ixgbe_unmap_and_free_tx_resource(adapter, tx_buffer_info);
 	}
 
-	return count;
+	return 0;
 }
 
 static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,