From: Stephen Hemminger <shemminger@vyatta•com>
To: David Miller <davem@davemloft•net>, Jarek Poplawski <jarkao2@gmail•com>
Cc: netdev@vger•kernel.org
Subject: [PATCH 02/11] sky2: fix DMA sync_single length error
Date: Wed, 20 Jan 2010 12:45:01 -0800 [thread overview]
Message-ID: <20100120204558.901334592@vyatta.com> (raw)
In-Reply-To: 20100120204459.820265084@vyatta.com
[-- Attachment #1: sky2-dmar-error.patch --]
[-- Type: text/plain, Size: 1544 bytes --]
From: Jarek Poplawski <jarkao2@gmail•com>
Using pci_unmap_len(), with the same length as pci_map_single(), with
pci_dma_sync_single_for_cpu()/_device() fixes this warning (2.6.32.4):
> Jan 19 10:43:50 mail kernel: WARNING: at lib/dma-debug.c:902
> check_sync+0xc1/0x43f()
> Jan 19 10:43:50 mail kernel: Hardware name: System Product Name
> Jan 19 10:43:50 mail kernel: sky2 0000:04:00.0: DMA-API: device driver
> tries to sync DMA memory it has not allocated [device
> address=0x0000000320a0b022] [size=60 bytes]
Reported-by: Michael Breuer <mbreuer@majjas•com>
Tested-by: Michael Breuer <mbreuer@majjas•com>
Signed-off-by: Jarek Poplawski <jarkao2@gmail•com>
Acked-by: Stephen Hemminger <shemminger@vyatta•com>
--- a/drivers/net/sky2.c 2010-01-20 10:04:08.629387601 -0800
+++ b/drivers/net/sky2.c 2010-01-20 10:05:39.333941031 -0800
@@ -2252,12 +2252,14 @@ static struct sk_buff *receive_copy(stru
skb = netdev_alloc_skb_ip_align(sky2->netdev, length);
if (likely(skb)) {
pci_dma_sync_single_for_cpu(sky2->hw->pdev, re->data_addr,
- length, PCI_DMA_FROMDEVICE);
+ pci_unmap_len(re, data_size),
+ PCI_DMA_FROMDEVICE);
skb_copy_from_linear_data(re->skb, skb->data, length);
skb->ip_summed = re->skb->ip_summed;
skb->csum = re->skb->csum;
pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr,
- length, PCI_DMA_FROMDEVICE);
+ pci_unmap_len(re, data_size),
+ PCI_DMA_FROMDEVICE);
re->skb->ip_summed = CHECKSUM_NONE;
skb_put(skb, length);
}
--
next prev parent reply other threads:[~2010-01-20 21:22 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-20 20:44 [PATCH 00/11] DMA sync errors Stephen Hemminger
2010-01-20 20:45 ` [PATCH 01/11] tg3: fix DMA sync_single length error Stephen Hemminger
2010-01-20 20:45 ` Stephen Hemminger [this message]
2010-01-20 21:32 ` [PATCH 02/11] sky2: " Jarek Poplawski
2010-01-20 22:52 ` David Miller
2010-01-20 23:21 ` Jarek Poplawski
2010-01-20 23:34 ` David Miller
2010-01-20 23:41 ` David Miller
2010-01-20 23:59 ` Jarek Poplawski
2010-01-21 0:04 ` Stephen Hemminger
2010-01-21 0:15 ` David Miller
2010-01-20 23:52 ` Jarek Poplawski
2010-01-20 23:56 ` David Miller
2010-01-20 20:45 ` [PATCH 03/11] skge: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 04/11] r8169: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 05/11] rrunner: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 06/11] de2104x: " Stephen Hemminger
2010-01-22 1:02 ` Grant Grundler
2010-01-22 1:12 ` Stephen Hemminger
2010-01-20 20:45 ` [PATCH 07/11] sungem: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 08/11] sunhme: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 09/11] cassini: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 10/11] cxgb3: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 11/11] ipoib: " Stephen Hemminger
2010-01-20 22:46 ` [PATCH 00/11] DMA sync errors David Miller
2010-01-20 23:28 ` Stephen Hemminger
2010-01-21 0:18 ` David Miller
2010-01-21 0:34 ` Stephen Hemminger
2010-01-21 0:36 ` David Miller
2010-01-21 12:44 ` Jarek Poplawski
2010-01-21 13:12 ` David Miller
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